I tend to use Sheehy POPs and TOPs - that is what the most experienced guy I trained with used a lot of. They are very simple in design. I have achieved negligible ABGs with these, and have not had them extrude when combined with a cartilage graft. I use medtronic, for no good reason other than they are available. They are HA coated Polycel, so they can be trimmed with a scalpel or fine scissors.