Amazon's trade-in deals were definitely the best for me. The $75 off a console coupons got me great deals on both a DS and a PSP (and, thanks to the additional $50 coupon glitch, a PS2 as well), and the 50% off coupon got me unbelievable deals on the Beatles Rock Band SE and the Demon's Souls CE. Add in to those the trade-in credit (which in many cases was actually more than I'd paid for the games in the first place, thanks to my CAG ways), and I barely spent any actual cash on any of those. I don't think anything could top those.