Another vote for ProLink. And for one drop on each link. On a fixed gear with a 1/8" chain and master link, it's a lot easier to see when to stop, as you generally start and end at the master, and there are only about 96 lnks. For a road bike you need to know how many links (usually it's 110-114 on a short-cage derailleur). I usually count four links at a time so I don't get lost or confused. No idea how many uses I get out of a bottle, but I usually relube every 400 km under dry conditions, and as required during the wet season.

Luis