It'll probably be a Samsung, which are generally fine, but there really isn't an ideal Brand/Model.
All can be ok and equally, all can have problems.
At one time (Pre HD) Pace was considered the best.
I recently had a glitchy box replaced and the installer had a van full of new Pace machines and they all had problems handshaking with my amp/plasma. We tried 3 but all gave around 15 seconds of blank screen and lipsync out by more than a second.
He managed to get me a Samsung which has been very good except for a bit of a wait for Info to kick in.
I think it's a matter of fingers crossed and hope for the best
Seriously though I have had all of the boxes and they all fail so go for the ones with the best picture (while they work) and although the pace has problems does give the best picture and next I would ask for a samsung - anything else is just junk!
intially had Samsung - sound failed , then refurb Tompson Utter poo replaced with new Amstrad - contrast issues only and waiting for new EPG - but quick , quite , responsive and works a treat - happier than i expected to be honest