I tried on all the boots I could find. Tech 6's, Fox's, Oneal's, and low model Gaerne's. Of all of these the Tech 8's were the most comfortable, this is because of the bootie.
This may also come from too many years of Ice Climbing, where you wear double boots. So throughout the years you get used to the booties.
When I found the Tech 8's, it was a no brainer. A boot with a bootie, OOHHH YEEEAAA(in Macho Man Randy Savage dialect).
But it comes down to whatever floats your boat, or in this case whatever twists your throttle.
Good luck....