i don't know how the sound compares to the dd5 but the
digitech rds-series isn't bad...they are racks, with lots
of knobs. i had the rds-1900, 1900 ms of delay in
4 ranges, LFO on the delay time (for chorus/flange),
feedback w/invert, a "repeat hold" switch for sort of
sampling (other models have "proper" sampling with
arm/trigger), mix out, phase out for pseudo-stereo.
probably a little brighter than the dd5 but pretty clean
sounding, and you can do that cool pitch drop thing
by twisting the delay time knob in real time (lots of
knobs on this thing, no digital readouts here). even
a cv in to delay time if that is something you like.
best of all, they are usually cheap...one on harmony central
now for $75 + shipping. the only digitech i've heard
that hasn't made me run screaming out of the room.
i used to have a boss rdd-10, it was "warmer" than the
digitech, and had the LFO, and was 1/2 the space,
but only 400 ms, and still around $90. and no repeat
hold (which i think the dd5 has).
for real cheap, look for an arion sad-1....guitar people will
laugh at arion, but this delay pedal is a decent sounding
delay, no fancy features but usually like $30 if you happen
on one.... and you can do the dub pitch bend on it real
time by twisting the knob.... also the dod fx90 (?), i have
one of these in a state of partial disrepair, it sounds good
too, ok so there are 2 digitech/dod things i can stand.
not as many features as the digitech (no lfo for one, you
can do a lot with a modulation delay) but i think this
one does sound better...not as cheap as the arion but
still cheap....