Note: Some of my "worst" choices are actually really good lights- they just don't fit my requirements like I had hoped, and so I rarely use them.
Best:
*NiteIze 3-LED MiniMag dropin: My gateway drug. I was over the moon when I found it back in '06. One thing led to another, and I spent the next year obsessively reading flashlightreviews.com and eventually ended up here.
*Original P1: My first quality light.
*Fenix L1T v 2.0: This has ridden on my belt for almost 4 years now, and probably will until the form factor undergoes another quantum leap in power/efficiency. I love the simple two-mode interface and forward clicky.
*Fenix LD01 R4: This is the light the seems to have started the second wave of my obsession. Just got it this week. This is the keychain light I've been waiting for. The modes are ideally spaced with no blinky nonsense, and the amount of light on high is unbelievable.
*Liteflux LF2: Occasional flickering issue. Loved the 2-stage reverse twisty. Default modes well-spaced, nice flood beam. Also, sub-lumen mode. This is now my favorite nightstand light.
Worst:
*MiniMag Solitaire: Love/hate relationship since 1994. I really really really wanted to like this light. It was just the right size, but frustratingly weak output and unreliability/flickering issues.
*MagLights before LED's.
*LED dropin for Solitaire: The LED separated from the base on my first one. Replaced under warranty. 2nd one lasted about two months and then stopped working.
*Fenix P1D-CE: Actually a great light- just not right for me. Medium is too bright relative to high setting, didn't like blinky modes. Too big for keychain, too small for comfortable one-handed operation. Replaced w/ P2D-CE w/in 6 months and have hardly touched it since.
Sent from my phone. There are many like it, but this one is mine.