I have a Maxon AD-900 that I absolutely love. They go on Ebay for around $300, but I got lucky and paid $250 shipped. I think they've been discontinued due to the scarcity of analog delay chips, but they're up on Ebay all the time. The nice thing about this pedal is that it has a 600 ms maximum delay time, which is about twice as long as a typical analog delay. It's buffered bypass with a mechanical stomp switch, rather than true bypass, but it doesn't suck tone at all, and it can be true bypassed if you really want to do it. If you don't need 600 ms of delay time, try the Maxon AD-80. 300 ms of delay, and cheaper than the AD-900. Other good delays are the MXR analog delay, the Boss DM-2 and DM-3, Ibanez AD-9, and EH Memory Man. The MXR pedals are very easy to wire for true bypass, but they run off of AC power only, so keep that in mind. Most of these can be had for $100-$200.
Ryan