I think some on here were bigger fans than me tbf. His biggest issue with us was that he cost us £2m+ and he never looked like a player of that calibre or close. As with Doc, he's got a good engine but that's where the similarities end really. Personally, I feel that Greg is a significant upgrade for us, he's far better technically than Jackson and although when he left a few fans were disappointed, he's not been a miss at all this season for us. Jackson's good in the air too, he had a very good season at Burton where he scored 10, I seem to remember him playing just behind the striker and that appeared to suit him more.
I think it speaks volumes that he hasn't been able to get a championship club, there's significantly more money on offer in there but in the SPL, a similar level to League One, he won't do a bad job.