First thanks for responding in such detail, second I have the tendency to agree with you on everything except possibly material. I can't find the link or thread but a while ago someone had a fairly decent test for frame deflection as well as frame failure. If I'm not mistaken some of Ti bikes failed significatly earlier than the Al ones. Deflection, and potentially comfort, was more a function of design than material. I believe the conclusion if that thread was tire pressure would have more of an effect than material on level of comfort assuming two competant designs. And now the contradictions...
I'm gonna pick on Tom because you mentioned him and seems to be the resident expert...
"A Tri bike is the way to go...no it's not - I would say for MOST people who are MOP - BOP a Tri bike is not the way to go. If you want to qualify and seconds count...sure get a full on Tri bike. If looks are important, get a Tri bike...if you want to train and race and be comfortable for 112 miles, hang out with buddies, and be an average IronMan hero...I would go Road bike." From an article from Tom's sight here
http://www.bikesportmichigan.com/bikes/difference.shtml "Many people think (incorrectly) a triathlon bike is only good for riding in triathlons. As we will see, this is not correct. Triathlon bikes are well suited for any type of long distance road riding where comfort and efficiency are the primary concern." "There is less distance between the thigh and the torso at the top of the pedal stroke. These two changes mean the bike becomes less comfortable. Because of the close proximity of the femur (thigh) to the torso (chest/stomach/abdomen) at the top of the pedal stroke (10 o’clock to 2 o’clock pedal position) the rider will feel too "cramped"." "A tri bike will make a novice faster/more comfortable/faster in the run....no it won't/no it won't/no it won't - a Tri bike will NOT make a novice faster, though it may freak them out and cause a novice to crash while veering wildly around the road on the aero bars." " An additional benefit is improved running performance off the bike as compared to riding a standard road bike and getting off to run. Lower back muscles are less cramped and fresher for the bike/run transition. Your transition from bike to run will be easier, especially in the first 1-2 miles of the run. " " Entry level cyclists will benefit the greatest from a triathlon geometry bike. It is not unusual for a customer who is riding 40 kilometers (24.8 miles) in 1:10:00 on a standard road frame equipped with aero bars to switch to a triathlon frame and be able to do 40 kilometers in 1:04:00. " Although Tom did mention the crash aspect as well...
" This is testimony to the versatility of the triathlon bike, but also an acknowledgement of its limitations as there are occasional crashes which can be attributed (in some part) to the handling limitations of triathlon bikes. "
Locally, Chip you're about as close to an "expert" as they come...sad to say about the area, but it's true. On this point and likely others, escpecially on P3's, you're in conflict with other experts. Not only that but I'd say you're opinion is inline with many other "Experts" of Tom's level as well. So you can definately see my confusion and frustration.
I think in the end this will be more like buying running shoes than relying on an expert. The first pair of shoes I bought worked fine, but not the best, but they were "expertly" fitted. My 20th pair of shoes I bought based on all of the knowledge I'd collected about running and particularly my body and running, pretty much without the expert.
I suspect I will end up following the same path of trial and error with bikes. Eventually I will be able to know what fits *ME* and works for *ME*. I will be my expert.
I think that my approach to this will be that there are few facts to go from. I will go by feel, and rough guidlines for fit. Hopefully I'll get to ride teh bikes I'm interested, despite that not being the best method either, and then comile and make a desicion.
In the it's about getting out and riding. I think even if I make a poor desicion I can "make it work". Maybe not a world class fit, but I'm not world class athlete.
~Matt