Welcome to the forum and congratulations on full-timing next spring.
You can use the search function on this site for 'Pinnacle' and you're likely to find lot of information. I'm sure you'll be doing the same type of search for the other units in your top three and will find folks that are pleased and those that are not for all brands.
Overall the RV industry suffers from a lack of good technicians at dealerships. No doubt you'll see that in posts by RV owners unhappy with the service and blame the RV manufacturer.
In any case, happy trailer shopping.
Sherm & Terry w/rescue Eydie (min Schnauzer) & Charley (std Poodle)
SOLD:2015 Jay Flight 27RLS, GY Endurance (E), Days: 102 '15, 90 '16, 80 '17, 161 '18, 365+ '20
SOLD: 2006 Ford F350 PSD, 4WD, CC, LB, SRW, Camper pkg., 375,000mi
Full timing: Some will think you're crazy, some will be envious, just enjoy the freedom!