In reply to Emily_pipes:
Pomoca skins, although pricey, are the best I've used. Black diamond the glue always gets super gummy, colltex seem to need replacing more often too.
Pomoca also come with hands down the best trimming tool out there. Double sided and offset about 3mm so you don't have to move the skin between cutting each side!
It depends a bit on your application, but the newest generation of glueless skins are really good. Can get difficult when repeatedly taking on and off during a day, but if they're dried out well are so much easier to use.