In redrafts I prefer keeping it simple and going the non-contract option.However, in dynasty leagues I heavily prefer contract leagues to the point where, similar to PPR leagues, I pretty much won't even play in any that aren't. A bunch of people randomly throwing darts at dozens upon dozens of prospects and getting lucky when a few stick isn't anything special, nor is just being able to hold onto a player for 15 years at no cost.I much prefer types of leagues that reward players for finding a prospect that they actually have to invest in to hold onto. This also helps players hold value a bit later into their careers which staves off some of the unbalanced trade deadline deals that often come up in regular dynasty leagues, where RB2's and WR2's that are within 3-5 years of the end of their career can be had just about for free.We use a fairly exhaustive set of rules but it's actually quite easy for people to pick up in a week or two, and are actually a bit simpler than many "salary cap" leagues. I've never had nearly as much fun in any other type of league.http://www.clan-loh.com/dynasty/rules.php