I'd go for the Jet parallel clamps. They are somewhat pricey, but they have a few refinements over Bessey and Jorgensen that I consider to be significant (e.g. trigger release). You'll be happy that you went first class and the cost will quickly be a fading memory. Furthermore, your grandchildren will someday fight over who gets the clamps.
By the way, about 18 months ago, I got three of the four-clamp sets NIB through ebay for an average of about $140/set. Failing that, try Amazon which has become my go-to conduit to tool purchases. Shipping is usually zero, even for a 500-lb cabinet saw!