Here ya go, Philip:
http://shop.odayowners.com/cordage/list2.htm?requiredfields=bid&bid=2450
This link is to the chandlery here on this site.
As I expected, they recommend 3/8" double braid polyester for jib sheets, and they sell Sampson XLS here. I have used XLS on my smaller boat, and I found it to be a very wooly feel cover, which has good grip, but my crew whined that it was rough on his hands.
Other options are pretty much any polyester double braid such as New England Ropes Sta-set, or Novabraid XLE. I think the Novabraid from Sailcare is probably the least expensive option:
http://sailcare.com/ropeshop.shtml
Double braid polyester is kind of an all around choice for cruising boats. Reasonably priced, holds up very well to UV, decent hand feel, but will tend to be heavy, absorb water, and have a bit of stretch to it. (I know one racer who calls it "rubber bands" when used for halyards.)
If you have more money than brains, you can move to other high tech lines. For example, I use FSE Robline Racing Sheet on my 15' boat, and New England Ropes Salsa on my 192. See, more money than brains…
Even though you didn't say you need them, New England VPC is a good choice for cruising halyards. It's a good, lower stretch blended line. I use it for outhaul and reefing lines on the 192. If I had it to do over again, I'd use New England Ropes VPC for my halyards. Instead, for the little boat, I used FSE Robline Dinghy Control Dyneema core, and for the 192 I used 1/4" Yale Crystalyne Vectran core. Hey, I can lift up more than 4 192's with some of that Crystalyne!
Actually, that's not quite true, I do have one more boat to re-rig, a wood GP14 racing dinghy. Yeah, I'll probably waste money on high tech halyards again, and probably more Salsa for sheets, even though Salsa is generally butt-ugly. But I like that line!
Brian