I just looked into repowering my Impact with a Yamaha. The dealer I worked with offered me 4k on trade-in for my 2018 Merc 115 ProXS and wanted 12k for the 115 Yamaha VMAX SHO.
The trade-in was too lean for my tastebuds, my motor has 125 hrs on it and I feel it’s worth more than 4k, so I’m going to stick with it. I do like it a lot, and the 1 issue I had Merc took care of under warranty. My reason for switching is simply liking Yamaha more and more these days.
I would also easily consider a Suzuki they seem to be dominating the repower market which means either they’re more affordable, more reliable, more available, or some combination of the 3.