I much prefer the 1080. Most of them seem to have better contrast and convergence than the 1084. And the 1084 looks kind of cheap, with that blue Commodore logo painted on. The 1080 has a proper logo that matches the A1000/500/2000.
I spent most of 1987 hoping that the 1084 was a temporary situation, but alas, it was not. I'm still waiting for my 2080. Two more weeks...