Oh, I have no problems spending money

I will try the ones you posted earlier.
I only got what I got from multiple recommendations. I'm easy like that.
Beecee...honestly I'm not trying to come across as rude...though I'm sure it sounds that way...I just wish people really understood the batteries that they're using...
bottom line is that all batteries are not created equal in their protection...or their drain rating...
and for us to be as safe as possible with what we're using we should be looking at truely fully protected batteries as far as Li-Ions go....and batteries where their max discharge rating is above the amp draw we're throwing at them in either a Li-Ion or a safe chemistry like LiFePo4 or LiMN...
As far as that goes there's really only a handfull of batteries..
several 18650 (these are really where you have to look at quality of protection) mostly...
and 2 3V LiFePo4 CR123a size (and one of them is brand brand new on the market) for 6V
and 1 3.7V LiMN highdrain CR123a size for 3.7V or stacked for 7.4V
lots of times people just think that the more mAh the better the battery is and that's not always the case
EDIT: as far as protection goes... lets look at what happens as far as most battery failures go...battery is overdischarged (amp draw exceeds max drain of the battery) which stresses it and causes it to get hot..too often and the battery can go into thermal runaway...which causes them to vent gas (and then Li-Ions vent flame too) when the rupture.. fully protected batteries have a PTC which vents when the heat or pressure are too high and seperates the poles of the battery killing thermal runaway...and the PCB trips when the amp drain exceeds the amp draw on the battery by too much shutting the battery down there too..
so the right selection of a fully protected Li-Ion cell there really shouldn't be any real chance of catastrophic battery failure..