What is the ideal keychain light these days? I ask for been through about 2 Photon lights (love how small and light they are), and after that been buying cheaper models in Target, Walmart, etc. I would prefer a light that I can click on and stay on without me squeezing and I used to have that with the Photon light and really not sure why they want bye bye but they are long gone. Granted this isn't mandatory but again a nice feature. Also, must be a non-color light for when I got one I think it was red back in the day, I couldn't tell cable colors when I was underneath someone's desk weeding through all the CAT5 cables. Advise?