The ETA is very good for a gas stove, the Hiker + is just a Nova in a can, IMHO your better off with the Nova as it packs very small. The Omnifuel is excelent as like the Nova can burn paraffin and naptha it also burns gas. I have a couple and are well pleased with them, mount one in a Trangia for just about the fastest boiling stove going, certainly quicker than a Jetboil.
Can't really disagree with any of that, but having recently found the ETA stoves I have pondered the ETA multifuel as an option.
When I am car camping, I'm less concerned with bulk than convenience and in fact rather fancy one of these http://www.hawkmoor.com/detail.php?p=33. Not that I am going to get one of course.
Graham