Hi I have read the postings about tubing types, blind tests, and ride quality with great interest.
For me the jury is still out on this matter (does it really make much difference if the jury comes in with a "verdict" anyway.......we'll all probably go on loving certain bikes and being indifferent towards others). I am quite surprised, however, that noone yet has mentioned the blind tests (under the auspices of Bicycle Guide, or some other "major" publication) carried out on about 6 identically constructed, decal free framesets (made by Torelli of various tubing mixes) about 12 years ago. The bikes were assembled with identical groups, wheels and tires, then turned over to a crew of testers. The testers were allowed to return to bikes to check their ride feelings, and I remember no lead waterbottles or somesuch being used to equalise weights of bikes. I am unsure how long the test ran in total.
The interesting thing was, that there was a decided preference testers had for one bike over others. That bike frame turned out to have been constructed of Columbus "Cromor" tubing, I believe. (please excuse any errors I may have made, I am working from (a dodgy) memory.
===== Neill Currie, Portland, Me 04102, USA. The Mountain Goat website is at: http://www.geocities.com/neill1234/index.html?1011568933040