is the larger one for drawers. I have the Amerock Kane in the 6.25 and like it as a single pull on the 24-33 inch drawers. I have knobs on uppers because i personally don't like handles there.

If you like the 2 pull look on larger drawers then you can go with the 3 3/4 for everything. Have you tried it out? You need to see if you can get your finger in there to open the drawer :)

I have the 5 1/2" Revitalize on my drawers. If 5 1/2" isn't available any longer, I'd do the 6 1/4". I think 3" is even too small for uppers. Here they are on my 28" drawer, my biggest drawer. I also have the same ones on a 11" pull-out pantry, a 13" trash pull-out, and other drawers, so it's a versatile size. Love the pulls and it's a good choice for your traditional cabs. I used the rectangular knobs for my uppers.

Pretty cabinets! I would get the larger pulls, and I like larger pulls on both uppers and lowers -- like the look but also, I have arthritis and need the room!