Apart from the Boss DD-500 I really like the MXR Reverb, it's the best sounding reverb I have played. The Boss RV-5 is another one of my favourites, which I had been using regularly up until I got the MXR.
I would always have the MXR on the plate setting and I took one of the presets on the DD-500 and tweaked it around to my liking. I don't use delay alway the time, but leave reverb on all the time.
Sometimes I run RV-5 > DD-500 > MXR Reverb. I got the idea from Devin Townsend and it does give you an absolutely huge sound, even from a small practice amp at home.