hmm could try any sobbat, strymon tape delay (if you can get the hold of one), rockbox boiling point, all boutique but the sobbats are very inexpensive.
also the new whirlwind pedals if MXR is your thing, not boutique prices at all, just made by the guy who designed the original mxr stuff.
i'm gassing one HTH's modded rat's right now, sound awesome, but it's on the end of a list of three or so things an amp being the first