I've moved all my batteries over to rechargeables and am happy with it. Tip: don't charge and store but charge just before needed. they don't always kee the charge well when stored.
Eneloope's and equivalents that comes from the same factory holds their charge surprisingly well (specified to loose only 25% of the charge over a year - when you buy a pack, they come charged and you can normally use them before having to charge),
but I do the same as you just to make sure, as I have had one or two inconvenient incidents where a battery was unexpectedly depleted.
I also find it useful to date the batteries with a Sharpie. They do degrade with time and I prefer to bring the newest to important events.
The older batteries goes into remotes and flashlights etc.
My brother-in-law was Director of the photography department of Japan's largest publishing company. Around 2005 when Sanyo introduced Eneloop batteries, he made a departmental decision to stop the use of regular AA and AAA batteries in photographic equipment.
At the time it was still mostly film and almost all their motordriven cameras and flashes etc. where driven by AA and AAA. He told me the annual savings (I have forgotten the exact number) but it was significant enough for him to get a very large year-end-bonus - the latter was the reason he told me I think.
It took me many years before I implemented the principle myself.