Clive Howlitzer said:
Poor Mark Meer. He never gets any love. Maybe I only liked him so much because he had this dry deadpan delivery for everything, which is exactly how I play my Shephard!
See, I think that's the problem, and the real reason so many people prefer Hale. I actually wrote a fairly lengthy diatribe about this a while ago, but don't feel like digging it up right now. Basically, Meer took Shepard's lines and attached a single personality/delivery to all of them. So, if you happen to want your male Shepard to sound that way, you're in luck, and Meer sounds great. If not... well, he did do slightly better in ME2.
Hale gave each line it's own independent delivery, so they can be combined and feel natural. Then again she's got easily 10-20 times as many roles under her belt as Meer, so go figure.