Forgot to mention this earlier; my prints from ofoto came in about a week and a day after my order was placed. The 20"x30" rint came in first, and the response to it has been mostly "WOW!". There are some minor areas of pixelization and noise, but considering that this was a 2048x1536 pixel original image, I can't fault the job they did.
The smaller prints, including the 8x10's, are some of the most impressive photos I've ever seen, much less taken. An unequivocal "thumbs up" for ofoto.
There's a slight knock on them that, fsicne placing the order, I've received three commercial emails from them... but, since they're clearly labelled, and they're all for things like "20% off your next order","free shipping through April", and the like, I don't feel much animosity at all. At least they're not pulling a Tiger Direct.