I prefer retail of any games. I want a disc anyway.
Which means I'm sorry for all of the Indies of which I'm not buying their (sometuimes really great, like Aquaria) games because I prefer discs.
I would like to suupport them via buying their games (I honestly do), but I want something that lasts, like disc, like a printed book, not just a cloud of bits & bytes residing on my HD until the magnetism gets worn off or the servers are taken off line.
Sorry, but I fear that I'm too conservative in that respect for the younger generations.