250R Ignition Systems

[Mr. Sandman]

Has anyone tried an aftermarket ignition system on their R such as the one in the link below? If so, what's your opionion of them over the stock system?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=43972&item=4544488886&rd=1

[hrc85250r]

i was thinking about getting one, but im not sure if it is worth 100$, ive never heard of a coil producing much more power or anything over a stock one...but idk, they sell alot of them, so they have to do something....

[TimSr]

Looks like a new version of a Roost Boost to me. Why they invoke CDI in the description is beyond me. Save your money.