MXR Carbon Copy Analog Delay - I've tried a few delay pedals - Fender Mirror Image Delay, electro-harmonix Canyon, Fender Tre-Verb, and Keely Caverns. I keep coming back to the Carbon Copy (permantly affixed to my travel pedalboard). The Tre-Verb (also on travel pedalboard) and Caverns (on primary home pedalboard) are exceptional and I use them, too. The Canyon now sits on my bass pedalboard and the Mirror Image Delay is stored away - I never could get it to sound the way I needed it to.

Mr. Black's Deluxe Plus Reverb & Tremolo - It's got an addictive (to me) dark reverb tone and excellent tremolo. It's never going to go off my main pedalboard because it's uniquely different from my other reverb/tremolo pedals. I can't recommend this pedal enough.
Surfybear Compact Reverb Unit - Hey, if it can fit on a pedalboard, I'm including it as a pedal. I have two Surfybear Classic Reverb Units (along with a '64 Fender Reverb Unit) and the Surfybear Compact Reverb Unit keeps up with them all, even though it has a smaller Reverb pan. It's dual mixer controls allows you to switch between two reverb settings and its built-in true bypass actually make it more useful than the Surfybear Classic Reverb Units (which I use Drip Switch bypass pedals for bypass functionality).