Originally i purchased a can from Honda on their recommendation and i've never looked back. Fantastic stuff, no mess, no sticky goo anywhere, its clear, stays on the chain with almost 100% fling resistance. Lasts a long time too, tho this depends on your usage, used on a Fireblade for 5+years, 15k, i think 3 cans in total, prices for this are around £9 being the cheapest, iirc Honda are charging around £12-14 now(Aug '10), used to be around £6 back in '04.
Agee with the other comments about it being the best lube ppl have tried, if you haven't tried it yet, i can thoroughly recommend it.