Try Sonicflavours DP5. I've been looking for a decent VST modulation delay for some time - it's amazing how many delays out there are fairly useless for serious work.
Very few allow you to type in the delay time in milliseconds. DP5 is well set up for both synced and non-synced.
I liked the Ohmboyz
demo, and nearly bought it. The structure is pretty weird though. I was extremely pissed to find that with the main delays, you can't set it up for a single slap echo. They are permanently stuck in some feedback mode, so if you have 0 feedback, you get 0 delay (not a single slap). So it's very limited unless you like what you get. I guess you could piss around with the wierd Predelays - but you don't get the resonant filtes on those, which is the main appeal of the thing. Very strange - which is unfortunate, because I like the basic sound quality. The demo hisses waaay too loud if you use up your free trial time - so it's not possible to play around with it to see if it's workable. It's not that it's very deep - just badly designed.