LiFe batteries are quite amazing actually. You just have to have those LVA/LVC sitting around to effectively use them as the lowest cutoff is about 2.8V per cell. I've even seen 2 and 3 cell TX/RX packs for under $10 lately. I personally try to convert all my stuff to Lithium if possible as it just makes my life a lot easier. I even converted my test TX to 2 cell lipo with a LVA built in
I cannot stress though how much you need a LVA/LVC (low voltage alarm/low voltage cutoff) and Lipo bags! Heck, you should have at least 1 Lipo bag especially for those hot NIMH batteries! Also go to wallyworld and get two cheap fire alarms, put one on your battery bag and one on your charger.
Hopefully you will never have to thank me for the advice.
