Things

Synthia is a free VST version of the EMS Synthia -- the sequencer and synthesiser used by Pink Floyd for "On the Run."

Warm Audio makes an LA-2A clone. The street price for that mono limiter is only $900 which, for an optical compressor is pretty darn good. I think the LA-2A is my favorite compressor. I've never been able to get the (vastly more affordable) 1176 to work for me.

Dunlop makes a couple Echoplex emulators. A preamp for about a hundred dollars.

And the actual Echoplex delay itself. They run new for about $200.

You can add the MXR delay switch for about $40.

I love my MXR Carbon Copy Analog Delay (also made by Dunlop) but boy... Dunlop makes some really great and refined-sounding stuff.  I love my Carbon Copy. It sounds fantastic. But the Echoplex... I'm not saying I don't love my Carbon Copy. I'm just sayin'...