Hey guys. Been lurking since I picked up my first bass last May. Here's the deal, I picked out an Ibanez EDB400 because I liked the way it sounded in the store compared to other guitars in the same price range. I had to fiddle with it a LOT once I got her home. Tightening tuners and loose bits here and there, truss rod adjustments etc. I was never happy with the amount of fret buzz with the Ibanez. One day I saw this used ESP LTD D5 at the music store and picked it up after playing it to check for buzzing. The ESP has much nicer action with out any buzz. No matter how much I tinker with the Ibanez I cannot get the action nice and low w/o killer buzz. Even with a rather high action I get buzz all the time.

Some frets are worse than others. I guess a decent luthier could fix some of this, but I'd like to keep the ESP IF I can manage to get a better tone out of it.
A couple weeks ago I upgraded from a practice amp and started playing with some other guys and I found that the Ibanez sounds quite a bit better imho. The Ibanez really thumps and sounds "full" all around the neck, even with the phat knob turned down. The ESP is missing something. I don't if it's the wood or the pick ups or the pre amp. The strings look like they're DRs, so I haven't messed with them. I need to sell one of these basses. The Ibanez really annoys me with it's buzzing frets and high action (I've adjusted the truss rod and bridge on both basses). The ESP has a sweet action and never buzzes on me, but it just sounds "hollow" to me. If I move further away from the amp and play it's really obvious and the Ibanez always sounds better to my ear no matter how I adjust the EQ on the amp or the ESP. No amount of EQ adjustment equals the field, the Ibanez just sounds more full.
Is there an affordable way that I could experiment with the sound on the ESP? Different pots, capacitors, pre amp etc? I don't want to dump a bunch of cash into the ESP only to learn that it's just the type of wood and there's no way to get a "better" sound out of it. I've raised the pups as much as possible already. I wouldn't mind replacing the pups if I knew for sure it would solve my problems. The pups in the ESP are ESP brand passive with an "active" eq (very low output). The Ibanez pups are also passive but they really crank.
Ibanez pluses; Four string, easier to play, fast neck, great sound (imo), really THUMPS, full sound all around even with thin strings, light weight.
ESP pluses; Five strings. Nice action, no fret buzz, nice funky sound when plucking really hard, active 3 band EQ.
Ibanez minuses; No EQ, high action, fret buzz.
ESP minuses; Very low output level, tone is missing something, empty sound....not full sounding.
I'm very experienced with soldering and have no problems swapping parts around, but I'd rather not pay $$$ for expensive pups or pre amps unless I knew for sure it would cure the D5's ills. Yes, I've replaced the battery.

I'd love to be able to fix up the ESP for cheap because it looks, feels and plays like a nicer bass than the Ibanez.
Thanks,
Luke