I bought the Spektr, havent had a chance to use it in any really demanding situations yet.
The reason I chose it was because its eVent, (and I wanted to try that out) and also its a bit different to the majority of other jackets at the moment. Wish I had a cypher and a Demand to compare it to.
The closure is a bit fun to get right, and takes a small amount of learning, and the hood is fine as long as your head fits it.

not sure which I would choose if I was you... I think I'd go for the minimus as it seems like one of those jackets that if you buy it and it falls apart because it is so lightweight, its a complete arse, but if you get it to review and it falls apart, you can give them decent feedback. The Spektr I dont imagine is going to fall apart anytime soon as its more of a lightweight alpine top which is light enough for running use.
shame you can only get one of them!