I started with Bessey H style pipe clamps, and they are still my favorite for many tasks. They do an excellent job of keeping panels flat during glueup. Then you will need some clamps that have a longer reach on the jaw. For that I use Bessey K body Revo clamps. They are a little pricy, but worth the money in the end.
I avoid F style clamps because they are usually flimsy with small handles, although there are some exceptions.
I avoid F style clamps because they are usually flimsy with small handles, although there are some exceptions.