Back when there were only a handful of players in the market, SRM used to be the 'gold standard'. Nowadays, I'm not so sure that's the case any more. It seems to me that the top offerings from many manufacturers rival the accuracy of the SRM, and most don't involve the hassle of having to send in your PM for service periodically. So, if you were to buy a power meter today and had an unlimited budget, what would you buy, and why? For argument's sake, let's assume that it will live on one bike permanently, so things like being able to easily swap from one bike to another aren't a factor.