Hey, I was browsing eBay, and came across these two interesting items. They claim to eliminate the chain from dropping, while allowing you to keep your 3x9 or 2x9 setup.

Heim 3 guide: http://cgi.ebay.com/HEIM-3GUIDE-The-...QQcmdZViewItem

Rockwerks Double Trouble guide: http://cgi.ebay.com/Double-Trouble-D...QQcmdZViewItem

Does anyone have any experience with either of these guides? Do they also eliminate or at least decrease occurrence of chain suck? Would they work with an external bottom bracket crankset, like my Saints?

Jeeze I have a lot of Q's.. sorry for my being a newb