Knowing both builders, I am torn on this one.
Doriano is a world class builder. He welds all the DeRosa's in house, including brazing the lugged models.
Its a little known fact, but back in the 70s, Merckx rode a DeRosa, rebranded as an EM, to victory in many races. One of those frames was built by a 15 year old Doriano. The bike still sits in their shop.
otoh, I have been to the shop in Boston of IF and they do world class work as well. I have seen them work. I have seen their quality control up close. I like the fact they are as close to totally green as a bike company can get.
Check out my blog post on my visit to IF (and ANT) .
http://deedubbayoo.blogspot.com/2008...to-boston.html
Cant go wrong with either of them. They both do great work. Its going to come down to your personal preference. Dont listen to anyone but your heart.
DW