I agree! I bought some of the 2" and 3" discs from Woodturners Wonders and found them just a bit too small also. I agree that they load up fast and don't last as long as others. I can't wait to use them up. I found a sanding pad that I had cut down and was just a bit smaller than the discs, so for now that pad is dedicated to these discs.
I haven't tried discs from 2sand but maybe I should. I seem to always be on a quest to find the best disc at the best price. I don't mind paying a
little more for better quality. Because I go through a lot of sandpaper (because you're suppose to use it once and get rid of it), price is a consideration.
My favorite discs so far are the Norton A275 from The Sanding Glove (
http://thesandingglove.com/Norton-A2...Grip-Discs.asp), followed by a close 2nd with Klingspor Stearate (which it doesn't look like they make anymore except for 600 grit and above?). I have used the Green discs from Vince and I like them. I believe in one of Vince's videos he says the difference between green and blue is the green have the grit marked on more of the discs.
I've also used Deerfos from Craft Supplies. It's an excellent disk but a bit high priced.
I've also used Norton Dry Ice from The Sanding Glove. It's an excellent disk also but even higher priced.
Discs that I won't use again are Industrial Abrasives (scratch patterns are too hard to get rid of), Mirka Gold (doesn't last at all), SIA Speed Ultra from Vince (doesn't last), and the above mentioned purple discs from Woodturners Wonders. When I say discs won't last, I'm talking they won't or barely last sanding one bowl. I'm not quite at the "use once and throw away" stage, I still try and get 2 bowls from one disc.
I have wanted to get a punch and make my own, but never got around to buying a punch.
I forgot to say that I do like and use 2" and 2-3/8" disc, and 3" and 3-3/8". I think that's another reason why I bought the green discs from Vince is because green comes in 2" and 3" and the blue doesn't. I use an oversize disc on the inside of bowls, and many times use the 2" or 3" on the outside because I can sand up closer to a bead or the foot. If I used an oversize for that it would hit the bead or my chuck jaws, etc.