we got a couple of sets (20) and have had them for more than 6 months now on every coat, jacket zipper (can't even tell)even on the dog collar (when the lights go out, here puppy, light to us!) and they work great, none have gone dim on us (for what we use them for, momentary spotting, it's pretty dark here, no city lights).
Get the Inova micro.. IMO, a Solitare is far too unreliable.. Whenever I go to use one the battery is drained.. The micro IMO is far superior!
Not sure about Inova but the DX ones are cooking the little LED alive, pumping nearly 80ma over a led spec'ed for 20ma. But then again at less than 50 cents each, who cares. If you want colored ones, search DX for color 5mm LED, they are direct drop in (except red, which may burn out from 6v).
I dont know about the Mag being more reliable. Everyone I ever had just ate batteries and bulbs.Old technology bad, new technology good.
one you must not like much!