I replaced all my running rigging last year with T 900, Sta-Set X and Sta-Set. The prices I got from Rigging Only beat everyone (although I didn't check Marine Exchange). The year before that I bought a Profurl from them and same thing they were less expensive than everyone even Defender! Plus - they are very knowledgeable and even nice guys. I just found their website - www.riggingonly.com &ngsp;Dennis

Gerrit,

According to New England Ropes Guidelines (http://www.neropes.com/) T900 is rated excellent for main halyards. If you don't want to go to that expense, Stay Set X is also rated excellent is much less money and should fit over your existing sheaves. I replaced mine with 3/8" Stay Set X this summer.
Tom Anderson

Gerrit,
Ditto on the Sta-Set X. I replaced all my halyards with 7/16" last winter. So far no problems with excessive stretch. Given the amount of line that I needed I purchased the entire roll and gained some savings. I replaced my sheaves but that was because they were worn out. On the deck hardware that previously accepted wire/rope line the all-rope halyards ranfine.
Dave'82 37'"Ronin"