I'm still using my Nexus 4, that thing has pretty much already set the "good enough" bar we've come to reference for why PC sales are tanking. The only problem is a lack of security updates, but we can't blame the hardware for that.

Incidentally I had a HTC Desire HD before and that became unusable on newer versions, as is the Nexus 7 now. These two clearly didn't have the good enough hardware specs.