>>97097
>Is 08th MS Unit a good pick?
It's good, not exactly 100% realistic and plot-armor-less, but worth watching. You probably won't like the final epilogue episode, though.
War in the Pocket and Stardust Memory are a bit better in this regard.
Also I'd recommend the MS IGLOO ones, they are CGI but they are quite solid and probably have the most "grounded" combat in the entire franchise after War in the Pocket.
That said, it's better to watch the entire UC Gundam in production order rather than to watch only some OVAs.
As for other sruff, can't really think of something non-Gundam and "real-combat" focused right now, the ones coming to mind are the M.D. Geist OVAs that have little character interaction focus but they are fun, and Gasaraki.