I appreciate all the input, it's really helpful but I'm still not decided. I was at a local shop the other day that had two Mark IV 22/45s but didn't handle one because at that time I wasn't thinking about this. I went to another shop today and they had two Buckmark Campers I got to put hands on. I liked the feel all except that the mag release was hard for me to get my thumb onto. I could remedy that with an extended mag release though. I'm hoping I can find a shop that has the two of them in stock that I can feel side by side.
As for the gun being light, I'd rather have the heavier because I would like to keep some of the feel of my 320 that I use mostly. Again, this would mostly be more for target acquisition practice during the winter months and to conserve my 9MM ammo, or mostly the primers since I reload.
One problem I see with the 22/45 is that they all seem to have threaded barrels, is that correct? If that's true I'd have to have the sleeve pinned to the barrel before it leaves the shop because threaded barrels aren't legal in New York. Not a show stopper though.
Yea, I'd love to spring for a Volquartsen but that's really more than I'm looking for.
Decisions decisions. My boys tell me I overthink things, maybe they're right?