(You have not mentioned if you look for rim brake or disc brakes - below is my take now searching for a disc brake disc)
I am in the search of a new rear disc wheel myself as I am getting my first disc brake bike and therefore none of my current wheels work.
On my current Gen2 speed concept (rim brake) I’ve been using a HED JET and I’ve been quire happy with it (weight was reasonable, 21 mm internal width for 25mm tires, cheap, etc) - that hit the spot at the time…
…but it is a cover over a traditional spoked wheel - nothing wrong with that per say and many see that as an advantage (more supple ride) but I have missed the ‘whoop whoop’ sound of a full structural carbon disc my old Zipp 900 had (but sold it, 17mm internal rim width - old technology).
I’ve had a hard time finding a good candidate hitting all my criteria’s (your answer to "what to consider selecting a disc’) :
- Large internal rim width for the current wider tires trend ( ideally 21mm internal width or more to support well 28 mm tires… although some 19.5 mm width works well w 25mm tires)
- Hooked rim, tubeless ready (for best tire compatibility and flexibility)
- Low weight if possible
- Full carbon construction if possible… although I could settle for HED’s again
- Affordable price (matters to me but I am going for a performance build so not the first criteria, but not spending $3k for sure.)
- Good look
(Aero performance between discs will be extremely similar in general… the very best ones might have only 1-3 watts edge on the most basic ones with straight walls is what I gather reading the forum entries here from knowledgeable contributors…)
And I have a hard time finding something I feel good about… There’s nothing out there ticking all boxes. Actually hard to find something missing only one criteria.
Forget most of the high bling / expensive discs - like the Zipp… super expensive, $3K, only 18mm internal width - old school… Marketing is strong there.
Most high end lightweight (Roval 321, Vision TFW) are impressively light, sub 1,000g but super expensive and small internal width ~19, 19.5mm; Vision TFW is ~$4,500?!
DT Swiss ARC 1100 Dicut DB seems to have good reputation, lightweight at 1074g, only 20mm internal width / 25mm ext (optimized for 25 mm tires?), solid disc, but on the expensive side as well ($2,700 for a wheel used only on race days)… also I would not know where to get one around where I am.
My current runners:
Premier Bike looks like a good option: best price up there, rooting for forum contributor, very good feedback on here. However 19.5 mm internal width, on the heavy side… but structural construction. Since I plan to go HED vanquish on front w 28mm tire, not sure I want to run smaller 25mm tire on the back, so not leaning this way in my case. If price matters the most, planning to run 25mm tires, that’s the best bet and the compromise is very minimal to save a lot from what I can tell.
HED - JET or Vanquish - USA made, well known quality and performance, JET is very affordable (alu rim, optimized for 25mm tire, 1268g) Vanquish is more high end ($, but optimized for 28mm, 1135g). However both are spoked construction… no “whoop whoop” sound… I may end up with that. Vanquish also obviously look like a glued cover on a carbon rim:
Latest find: Parcours Disc2 (from UK): Full carbon construction, a whopping 22.5mm internal rim width optimized for 28mm tires (they say ~no aero penalty for 30mm), 30mm external width (bike clearance?), price is reasonable: $1,399 (but who knows about ship/duty/clearance fees shipping from UK to USA)… only downside I can see is a bit heavy at 1,240g (but still lighter than the Premier Bike and HED Jet). I even like the look. I am very tempted to place an order…
I was minded in getting a HED disc (also to match what I what I will go with for the front wheel) before I found the Parcours option.
(Many other discs I looked at but did not mention here as they also were missing at least 2 criterias or more… Enve, Ron, Prime, etc)
Hope this helps and not confuse you more 
