My first packer was the Sailor, which was fine and nice, but nothing to write home about. I really like the size of the Masho, and it's definitely a favourite, although there isn't any detail or anything, so I guess my affinity is based on how it sits in my pants rather than anything about how it looks. The balls are nice! No flat back.
My current big boy packer is the Packer Gear packer. I like it quite a lot.