I am looking at getting a new rear disc wheel and the Vision is one that I have found within budget and hoping to get some reviews/thoughts as they are not very common. It comes as a wheelset with a Metron 90, which I understand is an older model.

The other options I have are:
Zipp 900, Reynolds & Corima - all tubular.

Also any thoughts on the Metron front wheel? Although it is not my main concern, I see it more as a bonus as the wheelset is a similar price to the others rear only.

The Vision is the only torodial shape, the others are flat discs.
The use is triathlon of all distance, sprint to IM.