Boss SE50 or SE70 - dirt cheap s/h and fun units to play with. The 70 is the 'poor man's
Eventide' with some good pitch shift + delay algorithms.
I keep meaning to pick
up a DP4 ..... I've only ever heard good things about them. Admittedly from fairly twisted
people ...

New, then the units that you are looking at are fine.
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Veni, Vidi, Aesculi
(I came, I saw, I conkered)