I have the 2531.80 and it is a fantastic watch. It's also the original Bond SMP (auto) with the Omega Calibre 1120 chronometer grade movement. The movement is a workhorse and performs very well. I had mine serviced a few years ago, and for about a year and a half, my watch ran +0.2 spd. I was blown away by the accuracy. Plus, being a modified ETA 2892-A2, you can get it serviced pretty much anywhere, when the time comes. Don't get me wrong. The 2220 is an awesome watch too, and even more "upscale" than the 2531.

Mine say's hello:
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And here's a video featuring the 2531 just to complicate things for you! LOL: