I got a used Albion recently, the one with the big knee rolls. It’s a very nice saddle but I think rider fit is really a delicate issue.
Horse loves it. I loved it the first few days, but now I think it’s too small for me as I bump on the pommel at sitting trot and even at walk, ouch. It’s weird that I didn’t notice this at first–the first week I thought it was the most comfortable saddle I’d ever sat in. It’s very cushy.
I don’t have a problem with chair seat, though. It really puts me in a good leg position. Maybe OP’s is too BIG for you?
I did find that I actually had to lengthen my stirrup one hole. With that, leg position is great, my trainer adores it.
It’s kind of a whole different feel. In my previous saddle I rode with seatbones tucked and worked hard to keep the “kneeling” position. I think this saddle puts me more in a fork, but it’s because my rear-end is too big and doesn’t fit in the seat. 
So I’m hurting from the bumping and will probably have to get another saddle. But since I’m (still!!!) in the market for a new horse, it’s kind of a moot point.