What type or brand of AA Battery should I use for my Tomy Talk N Action engines?

[Super]

I think I like that tester you show Dr Chris. I am going to add it to my collection of Testers and Rechargers. Mainly because it has the actual voltage digital read where, except for my Multi-meter, the one I use always just uses a bar graph. Although my favorite tester is different I love the fact that it tests just about everything, button cells and 3 different mini sizes in addition to a 9 volt, C, D, AA and AAAs.  I will use yours for when I want that quick accurate read especially on the re-chargeables. Although mine is silver (looks like they redesigned since I purchased mine) its pretty much the same. Amazon Link
There are others under different names but the Tenergy brand of rechargables is what I use. I pretty much use the "Low Self Discharge" Tenergys. They are more expensive but I like the fact that they last so much longer. Another big bonus for using rechargables in our trains is the fact that they wont leak and destroy your trains if you forget to remove the batterys thus corroding the contacts and more.