And unproven reliability, accuracy and most importantly, longevity.
I guess its fair for you to say these things but this could be said about ANY new product to a market but its really unfair not to get all facts before making discouraging commits about a new product.
From my first hand experience, Stages been reliable and accuracy and if I was worried about longevity, I could get the extended warranty. Heck, I could buy 5 of them with the extended two year no questions asked warranty and get 10 years of warranty for the price of one SRM.
I have had 8 different PM at one time (one for each racing and training bikes) and currently have 5 and for MTBing Stages does a great job. The most important thing is their Customer Service. Powertap's customer service is ok , SRM's is very good, Quarq's is Great but the couple of times I have had questions for Stages, I just have been just blown away and have to say Wow....
This is my first hand experience so far and I don't expect things to change.