I'd second what Harry & Frank say. I use the 4 cell 2000 mAh packs in small jets & 2 packs in my slightly larger jets as well as my prop driven models. Transmitters run them too. No problems whatsoever, I guess the new ones will be even better.

I don't 'bury' my packs in models, they live on my bench & I fit them to the model/models I'm flying on that day after charging.
I think by using the packs often you can keep a closer eye on their performance & pick up problems earlier. - John.