Power2max are in the same price bracket as well, kinda halfway between the stages and SRM (only measures in one place, but mounted in the spider like SRM/quark). And have apparently ironed out the early bugs like temperature causing the reading to drift.
Agreed, I’d look at P2M if buying now, the Rotor 3D version is reasonably priced. The fact it only measures one point is irrelevant when that point is the spider – it gets feedback from both sides. The Stages is just doubling your single leg power.
Stages have announced a UK distributor, but don’t actually have stock yet, it’s a very neat solution, for pure simplicity I’d be tempted, but I’d probably always wonder about my L:R balance, which I must admit I don’t know.
As an aside I’m thinking of selling my Powertap, just not doing any training any more, so it’s wasted! Silver Powertap Pro on black Open Pro rim with black DT Competition spokes.