John,
I see the new Triton has a LiFe option, what charger do you use?
That voltage drop off? can you put a voltmeter before a flight and say "time to recharge" or does it drop so sudden it doesn't matter what the voltage was before?
Or do you just recharge it every 2, 3 flights ?
Sal, since I already have an older Triton, I just bought that little charger made by A123 Racing to charge the a123s. It's about $50. If the new Tritons can do LiFe than that's all you need. You can check with Hank but I think you are correct - there is no way to accurately check remaining life in an A123 but you should be able to get basically the same number of flights as the same size NiCads. And, you certainly can charge every few flights if it makes you feel better. (just remember to bring your charger to the field).
Also, when you order your receiver packs, make sure you get them with Futaba plugs. A123 packs normally come with Dean's plugs and you will have to make an an adapter if you don't specify.