I have an early WASR10, one of the ones that looks like the SAR1 it replaced due to the import restrictions. Mine has been fine, and shoots as good or better than others I've had. Most AK's shoot pretty much the same with ammo they like, regardless of what the gun costs. My SAR shoots pretty much the same as my Krebs converted Saiga AK103K, and it even has some of the dreaded canted sights.
Speaking of canted sights, I have yet to see a WASR thats had them. I believe thats just a carry over rumor from the SAR's, which did have them pretty early on, and some were really bad too. Most of the later SAR's I've seen, also seemed to have addressed the cant issue.
Ammo wise, I've always had the best luck with the old Barnaul (which I believe is now being sold under the Brown and Silver Bear labels. The 125 grain SP's being the best, as far as consistency and accuracy goes, and that been from all my AK's. Wolf has always seemed to be hit or miss. I do have a couple of cases of the same lot of Wolf 154 grain SP's that do shoot very well though.
I think you'll be fine with the WASR. You'll probably srtill end up with the Arsenal, and a few others at a later date, as the AK's tend to be pretty addictive once you get one. Once you pop an Ultimak/Aimpoint combo on one, you'll really be hooked.