Hey, Dude. It sounds like you're in the same situation that I was in last year. Here's why I chose a Yamaha, which has worked out beautifully in my little home studio. Then again, keep in mind that I'm a guitarist, not a bass player, so my opinion of basses is inherently flawed.
I've been a guitar player for 30 years, and last summer I picked up a bass for my home recording (I was tired of bringing in bassists or using a synth). I spent an afternoon at my local GC and focused on two well reviewed low-budget basses, the Yamaha 170 and Ibanez 200, although I tried some more expensive basses for comparison.
At first, I prefered the Ibanez for its thinner neck and easier action, which might be preferable for some players, but I noticed some slight fret buzzing and a touch more background noise on the several guitars I tested. For my interest in clean recordings, I felt that the Yamaha was the better choice--the action was a bit higher, the neck a bit beefier, but the sound was very clean and pure (at least for a bass at this price point). In fact, my recordings since have born this out; the bass sounds solid and clear via a Johnson J-Station. I also found the Yamaha's unique body design and light weight to be particularly well suited to playing while seated, something I appreciate when recording. I've really grown to like this cheap axe.
So, in general... I found both basses to be low-cost winners, really quite surprising for their ridiculously low prices. For a beginner, especially a youngin', I would probably choose the Ibanez for its easy playability. For a recording musician with a lot of guitar experience, I think the Yamaha's a better choice--although I'm sure the Ibanez could be fine with some adjustment. Either way, I'd suggest asking a store to bring out a few of either model so that you can check the necks for straightness and smooth/even frets. I found a lot of obvious inconsistency in craftmanship at this price point, so after I'd decided on the Yamaha, I had the GC folks bring out 3 of them (new in box), and I took one that was clearly superior in overall build and finish.
If you're interested, you can search this forum (and via Google) to find loads of reviews of both the Yammie and Ibanez. Very solid reviews, overall, in the cheapo range.
Good luck, whichever way you head~
J.