Not too sure there is a nickels worth of difference in most of the TCs on the market today. My last two TCs have been Lance's products and they have served me well, but are a long ways from being what I would call a high quality product. To me, finding a floor plan you like is most important, then find one that has been properly maintained, if buying use, which I always do.
As you know from your trip last summer, once a person gets out of the south or SE, it seems about every 3rd or 4th RV you see is a truck camper, of all sorts of brands. As you get close to the US-Canadian border you will see more and more units built there and they are very popular in Canada.
Most TCs are built with the same basic parts, such as appliances, heaters, converters, etc. So even buying a used orphan rig normally isn't a problem with getting many parts for them on the after market. Sort of depends on which company is cranking out the units in the Pacific Northwest as to what you see up that direction also. Big Foot, North star, Adventurer, Okanagan, etc are still running around the highways along with many other brands.
I still think Arctic Fox builds some of the best looking rigs on the market, but they don't seem to have any dealers here in the SE. But since I buy used, the floor plan determines what we look for. My wife is talking about how we need to look at going larger and get one with a rear slide with a sofa recliner. So that would narrow the field greatly. We are currently planning to take our Lance 845 back to Alaska this summer on the Chevy DRW truck we now own. TCs are hard to beat on that trip, but anything a person is comfortable driving seem sto work well for most travelers to the north country.