My experience with Ibanez is mainly the SR series and older Blazer/Roadstar/Roadster basses with P or PJ configuration.
The older Fender-style basses were excellent basses for the money back in the day but these days there are LOTS of excellent, cheap Fender clones. They're still good instruments if they're in good condition but they're not worth "vintage" prices IMO.
The SR-series are the CLASSIC Ibanez basses IMO. The current models are generally very good basses in their respective price ranges. Personally I've never quite bonded with SRs though. I find that regardless of pickup configuration they always seem to have a kinda "nasal" midrange that I can never quite dial out without completely scooping out the mids. Don't get me wrong, it's not a bad tone, just not MY preferred tone. Also, many SRs are humbucker equipped and I generally prefer the tone and dynamic response of single or split coil basses.
A couple of things to be aware of:
The ultraslim necks on SR can be a bit unstable and require truss rod adjustments when the temperature/humidity changes. I've mostly experienced this with the cheaper SRs. Especially the older ones before they started using laminated necks. I rarely see SR necks develop serious issues though (like twisting or ski jumps). At least not more often than with any other basses.
I currently own an SR 2605. It's a very nice bass but it has some issues. The mono rail bridges are installed slightly too far back. The bass can't be intonated properly with all strings (including the stock strings...) and only just barely with some strings. I've seen the same issue with the 4-string version, the SR2600. I have no idea if this is a problem with other mono rail SRs. If it was a regular bridge it could have been easily moved of course but these mono rail bridges are recessed into the body. Also, even with the Nordstrand Big Singles it has a hint of that "nasal" SR midrange I mentioned earlier but this is just a matter of personal taste. I should probably also mention that the Nordstrand Big Singles have an INSANE magnetic pull on the strings. This causes fret buzz unless the pickups are lowered to the point where the tone ALMOST starts to suffer. It's a VERY fine line with these pickups and they have to be adjusted very carefully.
I also currently own a cheaper SR300E. Again, it's a very good instrument for the price but the tone isn't really my kind of tone. The nasal "SR midrange" is more prominent on this one. The neck is also a bit thin for my taste (I generally prefer "modern" P-bass necks). Also, I'm not really a humbucker person and this bass sounds best in humbucker mode, even though it has switch for coil splitting. In single coil mode it sounds like a kinda sterile version of J-bass. In addition to the humbucker and split modes it also has a "power tap" setting. This setting has a tone somewhere between single coil and humbucker mode. I'm not sure exactly what it does to be honest. Tonally I guess it can be seen as the best or worst of both worlds, depending on personal taste. To me the power tap setting sounds a bit weird, like there's some kind of phase issue/comb filtering going on (but I would say the same about both pickups on full with a J-bass and lots of people love that tone).
I must stress that although I've had some issues with my own Ibanez basses (and the Ibanez tone isn't really my thing) I still think they're very good instruments. I would even go as far as saying SRs are one of the classic bass models, up there with P/J-basses, Rays and Ricks. You really need to try one yourself before you can make up your mind though. All of the above are just MY personal opinions and I'm generally more into passive P-basses and vintage short scale hollowbodies.