Glad to hear you're enjoying the Hokas. I've been wearing them for a while and think they're awesome - I started with the Stinson and now wear Conquests. Maybe when I'm a bit lighter I may give the Clifton's a go ! As you say, they're exceptionally cushioned, are lighter than you would imagine and have a low offset (heel to toe height difference) so run very smoothly.
The only downside is the fit - they tend to run small by UK sizes, so go half a size up. They also tend to be narrow in the forefoot - not by a huge amount, but I do wish they were a touch wider. Oh, and they can be hard to find, although that seems to be getting better.
Take a look at Altra. I've just got a pair of the Torin 1.5 and really like them - minimal but cushioned as I think you're after. Very comfortable fit, simple, no real arch support, zero drop, nice level of cushioning throughout the shoe.
I got mine mail order from Northern Runner and they seem to fit true to size - i.e. I'm a 10 in everything else, and was in these too.
Agree with book trunk 100% - if they work for you, stick with them.
But don't worry, the shoe manufacturers change your favourite shoes annually so there's a pretty good chance the shoes that work for you today will morph into something that doesn't in version 11 or 12. Then you'll have reason to find something new...