I just don't like the twiggy necks of the SRs.
A lot of people do, though. I love them because I have little girl hands. Yes, I can play my RBX A2 and its a great bass. But the SR4 neck is almost like having a shortscale.
Also the "twiggy" part is in your head. Most of the SR are 5 or 3 piece necks which I've never had any reason to believe would be any more susceptible to warping, breaking, or twisting. The 5-piece Wenge/Bubinga neck on my EDB550 is beautiful. I actually have more problem with the neck on my Jaguar. Its much more affected by climate/weather/string/guage changes. When I first got it, I considered it might just be a lemon neck. Turns out it just needed to be way more carefully tweaked.
I think everyone though just has a different "feel" that they want and everyone's hands are different. An interesting contrast is I friggin love the neck on my Lace Helix and its a bit fat D shape. But I don't like other big fat necks, just that one. Something subtle about the shape, thickness, and fretboard radius that just comes together for me.
Ibanez has 3 other variants of the SR now and they all have a different neck than the actual SR series. I recently had an SRT on a short visit and was suprised to feel how much thicker the neck is. Its actually the thickest SR. I didn't hate the neck, the think I didn't like about the SRT are the knobs and the American EMG pickups. The highs sound compressed, like a low quality MP3.
Although I don't have as much experience as most of you probably, for me it comes down to this. Ibanez makes a good, fairly inexpensive bass with high quality, playability, and few issues. I like Ibanez's, I have no problem with them, but I've never really found one that I could love. They make good, generic, workhorse basses. what they don't do is make something special. ive never been blown away by an ibanez, but never have been really disappointed in one either. I've played Fenders, Yamahas, etc. that I felt were exceptional, and would be very happy about owning. not ibanez;s though. I cant really ever see me going "wow, i really really want (insert ibby here)," ya know?
Again I think it just comes down to what you personally are wanting. The quality of Ibanez basses at any given pricepoint is not any worse than anyone else and is probably many times a little better. Tons of people talk about the wide variance in Fenders and how there are Production Squires now that are making people second guess the pricetag on a Fender.
For some people its just the aesthetics. I'm bored to tears with fender's color options (maybe options isn't the right word..) and their extremely safe aesthetics and designs. Yeah, they've got a heritage to uphold. But they could definitely afford to do a couple of experimental models. Instead, everyone else is doing what they aren't. I've got a maybe six pound Yamaha here with a body made out of various layers of mystery wood (the RBX4 A2) that was very affordable even before the blowouts, and the sound has plenty of low end and a lot of punch. I also can't believe the fretwork. I think the LED lights are cool >_> I've got an Ibanez with 5-piece wenge bubinga neck and an ash body with a rich walnut color stain that is just gorgeous. Yeah its not very tough, but hey...
Some people just don't like the shape of the SR. Ibanez does have other basses, you know. Yeah, they may not come in super pimped models but with all of the pickup and bridge swapping that goes on around here in fender derived designs, I think its acceptable that some of their alternative models come in the middle road and may need new pots or a different Pre-amp to REALLY satisfy a player looking for high-end.
You can't tell me though that Ibanez doesn't have some beautiful basses. The white Jet King with three single coils. The blue flamed top ATK with a light colored maple board. The SR700, either color. the brown looks more like blood red and its a rad looking thing. The new SR370M with a little gutsier looking take on a sunburst with a maple board that complements it really well. I don't even like sunbursts and I want it. several oil stain finishes. A variety of woods available throughought the line. You can get Ibanez basses with Mahogany, Zebrawood, Koa, Ash, Maple, Wenge, Bubinga, Jatoba. I've never strapped up an Ibanez in the current models offered that didn't balance near perfect. We're talking with the head going up, not even level. There is plenty to like.
I think what hurts them the most are the non standard routes. Should I buy a beatiful bass that I don't like the sound of, getting new pickups becomes expensive because I'm gonna need new routes. But I like this color option or whatever, so I can't just buy a different model with pickups that I might like better.
*for those that don't like the string spacing on the SR. I believe the SRX has a wider spacing. And the pickups are more of a normal shape so if you don't like them, replacing should be fairly easy. The neck is even a little thicker.