I own the Sherpa 7/3's and have skied the 5/5. I absolutely love them. Probably has one of the most natural progressive touring strides (IMO) with the release and the bio stride tongue. The dual hinged "dynalink" they use for the instep buckles offers little resistance when fastened down in touring mode. Certainly allows for a very shoe like feel when touring on more uneven terrain. My only complaint is that the sherpa line being developed by Plake and other like minded ski mountaineers, they have definitely focused on weight savings, giving the boot a softer than idea flex in its category as well as a lower than average cuff height.
Honestly, mine were a little soft but fit super comfortable and were some of the only touring boots that fit me (having tried Sportiva, Scarpa, Dynafit, Black Diamond) and all I did was buy a pair a Booster Straps World Cups and now I can fasten them in a get a lot of spring and pop out of the boot.
Overall, given I really like Dalbellos, and as long as you fit their fitting profile, they are wonderful boots! That being said, you cannot compromise on boots. Skis, bindings, skins you can...but not boots. I will certainly reiterate what others have said, the hunt for boots is a lengthy endeavor. Try boots on no more than 3 at time. Then come back a few days later if you feel they may work.
Nothing will spoil your fun faster when out touring than cramped, painful and damaged feet! Buy what fits you even if they are the most hideous things you have laid eyes on.