See UMPCportal. My favourite is the Asus T100, but it suffers from the problem with most of the current crop of Bay Trail-T devices; 2GB of soldered RAM. 64GB m

See UMPCportal. My favourite is the Asus T100, but it suffers from the problem with most of the current crop of Bay Trail-T devices; 2GB of soldered RAM. 64GB model will be around for $300 around black friday. The HP Pavillion x2 should have 4GB, but is much pricier. IMO the Acer C720 chromebook is the best deal around currently; just put linux on it and replace the 16GB SSD with a larger one, performance should be even better than the 2010 MBA AFAICT. Things are definitely starting to get very interesting though, I'll be keeping a close eye on devices released in the next 6mo.