[kevm14]

Tried the 15613 build linked by the OP. I used it for about a day. It loads much faster, yes, but as one astute user noted, that is only because it is precaching itself. When you actually close Opera, the next load is normal speed. I also found that webpages rendered/loaded slower. It also crashed once. Needless to say, I reloaded the stock Opera cab I found in storage. There's a reason it's still in beta...

I am running a stock TP with only registry tweaks at this time.