Having already bought a 36CKTS a year ago, I haven't seen firsthand the changes made to the 32 or 34, aside from just now browsing floor plans again. And I might be biased given my choice as well. But I'll share my thoughts anyhow
Among the things to consider are:
1) the 36 gives more counter space to the left of the stove. Not sure if you cook indoors a lot or not, but we have found that extra space to be quite nice. You also get the extra storage space that comes with the large drawers located under that area.
2) having access to the fridge while slides are in is a nice plus. If they made that change on the 34, kudos to CC! Much easier to stock and also access the fridge if you stop for a snack along the way
3) the 36 gives the option of an 18 cubic foot residential fridge with ice-maker and inverter. We absolutely love all the space this affords us and we no longer run out of ice (granted, it is just the 2 of us, and some of my beverages are consumed from a cold bottle !
). When we were shopping, the residential fridge was a must have. We have been able to turn our inverter on the day before departing to let the fridge cool down (while in storage) prior to stocking it
4) think about TV viewing. When we were looking, they had a model 36RE which had the TV and entertainment center in the rear, which seemed like a good idea. But if you watch TV mostly from the recliners, you will constantly have your head turned, rather than looking straight on, or move the recliners for better viewing. On the 34, it looks like recliners are in the rear and you may have similar issues, and may not have same flexibility to move recliners to better position
5) you may or may not need a bigger truck for the 36. All 3 weigh a bit anyhow, so it may be a moot point. We use an F250 with added leaf spring (so it's like an F350, according to some opinions); most people will advise you to get a 3500 /f350 dually. We have been satisfied with our towing to date.
6) I don't know if the slightly shorter length will make much difference. Most of the places we've stayed in or looked at (granted, relatively close to home so far) but we try to visit campgrounds without the rig to see if we like the layout, etc. Regardless of which one you choose, it might be considered "big rig" so maneuvering will be about the same.
7) Slightly larger awning width (18 vs 16) on the 36. Might mean a lot if you like hanging outside!
8) this may be a regional thing, but I rarely found dealers with the 32 or 34 on their lots, but found no shortage of 36. Was a big deal for us as walking thru them was a necessity (was hard to pleas the wife!), and we didn't have to wait to order what we wanted - the unit we wanted spec-wise was out there waiting for us when we were ready to buy.
9) many if not all of the 36 units come with that 2nd AC unit standard - and that 2nd unit makes a big difference
Hopefully I didn't bore you with all this but I wanted to give you some food for thought. It is a big decision to make. We like you weighed the options and decided that for the price difference, might as well go bigger and have less chance of buyers remorse down the road. We love our unit, and I'm sure you will be equally happy with whichever of the 3 you decide upon !!!