What do you guys reccomend for a glow starter?

I'm kinda looking at the Hobbico and/or DuraTrax C-cell chargers...

1. How fast do these things eat batteries?

2. How long do you normally let the starter sit on the glow plug before flight?

3. If these starters don't amount to a pile of let's say beans, what do you reccomend for a glow starter?

Link to Hobbico glow starter in question:
http://www2.towerhobbies.com/cgi-bin...?&I=LXVY89&P=7


Thanks,
- Camel.