We've bought two thunderbolt displays today. After going to Staples where they tried to sell us a 2 y/o floor model for $949 (Staples has been selling Apple in Canada for a long time already) without warranty (?! they said it was already activated with Apple when they set it up as floor model?! Is that common practise?) - we went to Best Buy, they had 3 in stock, one was a return, the other two brand new, although he noticed that one was the full price $999, the other was on clearance for $899, the only difference is the SKU number The one on clearance is MC914LL/A while their current model is MC914LL/B I did some basic research and so far came across the difference either being an included MagSafe adapter - which is not the case, both boxes contained the adapter - or the change to a Cactus Thunderbolt chip. Obviously I can't check that, so do any of you guys know what the REAL difference is between the two, as so far it seems like a really lucky deal to me.