I'd be really interested in vector since so far this seems to be the only device capable providing wealth of data from each leg independently. If I remember correctly Ant+ allows up to 200 messages per sec. It would be very nice if their recording computer would utilize that rate and instead of simply recording calculated power data at fixed rate would instead record angular distribution of power for each leg with let's say 5 degree resolution and store this short arrays along with their timestamps. This would definitely give competitive edge to their device and allow some interesting research along with fine tuning pedaling techniques.