@GA, well one brass and the bumps as you described them is about the next best thing of all the more modern designs that I have witnessed. Rest of it sounds pretty fair & in keeping with contemporary stuff too. The ones to absolutely avoid are those with cuboid springs - they are truly dreadful things as they mostly just don't work! Then there's fixed alloy studs, which really are a major pain at times. Nylon clip stand offs are a nice enough idea, but I've never seen a good exmaple of them that worked as they should have - they all seem to go for far too cheap and nasty versions, and therefore tend to throw the baby out with the bath water!
The venting thing sounds quite a nice feature.
The venting thing sounds quite a nice feature.