I use 18pound TUF line - the braided stuff. It comes off the reel easily without any coiling memory, floats and is therefore easy to mend. The lack of stretch is good as it allows for quick hook sets.

The only drawback I've found is significant tangling in mid-air during a cast when the line is brand new. This is overcome two ways: 1) finger the line as it comes off the spool, and 2) eventual soiling of the line after a few days fishing eliminates the problem. This tangling can be quite frustrating as the tangles are really tight! Use needlenose pliers to help with the tight knots.

The line does not take abrasion well, but that is not much of a factor when using bobbers. It does prevent me from using it for drift fishing, however.

P.S. I use this line on a Shimano Spirex 4000 with a 9 1/2 foot spinning rod.