Should we run with AGM Sealed batteries?

[MIMbox]

Hi All.
Thinking about sprag related posts.
Fitted an upgraded alarm/immobiliser last month, ( live in London).
Did one decent run, then went down with man flu, ( like swine flu, but worse, of course!!)
Anyway, serious question, alarm has totally flattened battery, and I dont want to chance it now, so about to order replacement, and some kind of optimate system.
Best Battery? I can get a Westco, or Numax sealed for around same cost, but who has experience of any, and what do you think about the battery you bought.
Be safe, only breathe out!!!!!!

[aeronca]

i just recently got a new agm battery and so far i like it alot. it was expencive, but given the fear of not having a good battery in the steamer, i looked at it as an extra prevention. my lead acid just never seemed to really be strong, and after 2 years it finally crapped out. i think the agm is the way to go.

[abruzzi]

The only drawback to AGM batteries is that when they die, they die fast--with little warning.  My KTM has an AGM I replaced 9 months ago.  One day it cranked fine.  The next day it wouldn't even turn the motor.  That might actually be a plus for the sprag issue, but it's bad for the "i want to take a ride today" issue.

Geof