From a construction standpoint, my vote is with the 200's echo. Being part of the main board, there is WAY less chance of bad connections developing. On the downside, due to its being all surface-mount, modifying the echo is difficult.
I found that a 22k ohm resistor at R39 gave a very nice delay compared to the stock setting. Not too fast or two slow. If you happened to like the old Mr Jigs reverb sound, use a 10-15k, and you'll be almost identical in sound to that old reverb unit.