If the OP is still out there and cares, after reading through things further, and getting past all the noise, I realize that you are comparing used versus new at a particular price point. That's important.
Used MErlin VSM-MXes at a good used price will probably not depreciate as much as new anythings.
Given that, I personally would be even more hard pressed to go for new Gallos over floor standing MErlins with Bamm.
This is just my opinion of course. I have never heard MErlins but would feel confident trying them in your situation if it were me.
A sub can always be added later if needed, but the benefits would likely be marginal as indicated and only with some recordings/music types in a smaller 12X12 room.
Of course, some people feel more comfortable buying new, all other things aside. Only you as the buyer can make that judgement.
Used MErlin VSM-MXes at a good used price will probably not depreciate as much as new anythings.
Given that, I personally would be even more hard pressed to go for new Gallos over floor standing MErlins with Bamm.
This is just my opinion of course. I have never heard MErlins but would feel confident trying them in your situation if it were me.
A sub can always be added later if needed, but the benefits would likely be marginal as indicated and only with some recordings/music types in a smaller 12X12 room.
Of course, some people feel more comfortable buying new, all other things aside. Only you as the buyer can make that judgement.