I has an SR375F, which is similar animal. If you are planning upgrades, it's a little problematic on that one but not impossible. I swapped out the bridge with a hipshot, and there was a small gap at the bottom, but no big. Filled it in with a small thin piece of flat-black wood. Looked pretty respectable. If you want to upgrade your pickups, I found some Barts that were pretty close to the Ibanez size, but were a little shy of being a direct fit. It worked ok because it was very close. I just split the difference and left a tiny gap a the top and bottom. Barely noticeable. Cannot speak to your your other choice, but can say the I get the draw of the Ibanez. It's very comfortable to to play. The neck raduis and the string spacing were great in my opinion.
Not that you asked me to, but let me throw another brand your way that may be worth a look:
Bass
I'v had 2 and really enjoyed them. Still have a Schecter 5 right now and is one of my main players. They have stuff in your price range, and if you go used, you might be able to find an even nicer model.
Hope this helps!!