#1
I occasionally like modulation effects, I specifically want "Hall" Reverb and delay. My Roland only has the spring reverb and the Delay does not work exactly like I want it to.

Holy Grail will meet my Reverb needs but I would also have to get a delay pedal of some kind.

However Damage Control Glass Nexus has a bunch of modulation effects, and judging by the samples it has everything I want.

However for anyone who has tried either pedal which reverb is best, my priority is really reverb I am willing to get a second pedal for delay but if the glass nexus is good enough then I can save myself the trouble of getting a second pedal.
#2
holy grail had 'flurb' combo of flang and verb. holy grail sounds like a wet surf wipeout from the 60's