The AT-AT Driver was largely overlooked in my collection I guess... He was a pretty good figure for his day though, that's for sure.
I never got Hasbro's updating process on this one though. I thought the Saga one was really a good figure, had scads of articulation (I'm ok with the angle-cut elbows on a figure like the AT-AT Driver or Death Star Gunner, and the lack of ankle joints). I bought a number of those thinking "how could they bother improving this guy?", and then they did just that...
I still have to say I like the Saga figure a little better though. The BAD figure got bashed a bit when it first came out, but it seemed to be largely from people who weren't putting the helmet on him properly or something. I liked the effort Hasbro put into changing up the Clone head and making it OT-ish with the sideburns and hairstyle too... The feet bother me to this day though. Part of me prefers the Saga, but ultimately they both mix well so I've got them meshing together.
Honestly the POTF2 figure doesn't look horrific with them either. Mine haven't totally retired yet then, and are still in the back rows (kind of like my Death Star Gunners from POTF2).