T.Rex Replica
Its expensive but has versatility (Tap Tempo Stereo Outputs) if u need it but is still simple (i reckon its simplier then any "Digital" BOSS Unit
I second the rocktron for simplicity! I'm real pissed mine got stolen...but hey, I'll get over it...I'm gonna replace it with a DD-3 this time though just for a little more flexibility, even though I think the rocktron sounded better. The DD-3 sounds good enough for me and gives me a couple of more options.
You say simple no frills? I just ordered a danelectro BLT. I expect to get 23 dollars worth of slap back echo. I should get it some time this week. I will report my finding. If it's a keeper? I plan on hardwiring it into a metal box.
Old Ibanez DML-delays if you can find any used ones.
Sounds nicer than Boss.
If you can find any Chandler Echo than you're lucky, but those a re mostly 19", but simple and delightful delays.
Our own stuff I can recommend the Reed Repeat, deadsimple and sounds nothing like normal digitaldelays, and it is not even expensive
Niels