I'm guessing the McIntosh is the one you fancy but you'd quite like to be talked out of it
At the price of the McIntosh I'd want a home dem for at least a couple of days. So I'd find a dealer who will let you do that and try the McIntosh. If it is no improvement over the Cambridge then problem solved, stick with what you have as the two cheaper alternatives are unlikely to be better.
If the McIntosh is outright better, straight from the off, no need to think about, then start considering the cheaper options.
Current Lash Up:
TEAC VRDS 701T > Sony TAE1000ESD > Krell KSA50S > JM Labs Focal Electra 926.