Given the deal on the Jorgensen cabinet master clamps (see the deals and discounts thread) and the fact that I am building a couple of sofas right now, I picked up 6 48" clamps to make the back, even though I only needed 36" clamps, simply because the extra $4.50 after discount from HD for the extra foot seemed like a good deal. But I was looking to see what everyone else thinks. Do you have a mix, as long as you can own, whatever you get a deal on, etc.
For the record, I have a couple of 5' pipe clamps, a couple of 10' pipe clamps, 4 24" quick grip clamps, 4 lighter 24" bar clamps, a dozen or so 12" quick grips and some other clamps I use less.