I would like a review on the prospect. I have a KAQ new river, very warm at 30 no problems hanging it, damp weather it works great. It doesnt compress very well but for the money it is a great quilt. Kinda heavy too. If you find anything out on the prospect please let us know!!
From what I can tell, they both use 6oz Apex. The Jarbidge is 42"W wide by 58"L (2,436 in2) and the similar prospect is 44"W x 54"L (2,376 in2). The EE Prospect is about 3oz lighter. Probably due in part to the slightly smaller size. It also uses a lighter weight fabric (PHANTOM10D ultralight Nylon taffeta .65oz yd2) which helps the weight a bit. Other than that, the only difference I could tell is possibly side channels which may make the quilt a bit easier to adjust. However I'm a newbies to UQ's, so that may not be the case.
I ended up ordering the Jarbidge. It was ~$115 shipped and should be ready in about a week. The Prospect was ~$160 shipped and had a lead time of about 1-3 weeks per the EE store. While I would have liked to save a few oz, strong testimonials, price and speed trumped the Prospect.