I really like Leslie effects too.
There seem to be 2 types of pedals - the chorus/phasers, and ACTUAL Leslie sims, that do the volume drop/treble drop thing and/or ramp up and down as well. Which are you after? AFAIK the 'Hendrix' style sound - ie the Univibe - uses the former. I got a danelectro chicken salad vibe recetnly which isn't a classic vibe at all, but does the 'univibe' phasey chorus sound pretty well AFAIK, so a lot of 'vibe' pedals are incorrectly named.
Isn't the H&K about the most expensive around? It's about 7 or 800 bucks AUD here. Other cheaper pedals to try out would be the danelectro rocky road, which has wildly ranging reviews on harmony central so I guess you'd have to check it out in person first, it does ramp up & ramp down etc, or the DOD vibrothang, which is supposed to nail the doppler effect but doesn't do the Leslie ramps.