Effects Processor to run Amiga through

[minator]

I've never been a fan of the Alesis airfx. A friend of mine had one, I tried it, didn't work for me. The kaoss is very interesting..

I also have a korg monotron. Its dirtcheap analogue stylophone with audio input. look it up on youtube, there might be someone using to do something similar to what you are doing.

There's also a Monotron delay.  It'll give you a synth, a filter and a delay all in one.

Another thing is to look at is a guitar multi-FX box like the Line 6 Pod, you can do loads of things with them and then really dirty it up with an amp simulator.

[minator]

And I'm heading in the opposite direction. From software to hardware.

Quite a few people do a Hardware->Software->Hardware transition.

It's a completely different workflow and a lot of people don't like controlling everything via a mouse.
Some give up on the computer all together and switch over to hardware recorders and recording on tape!

I haven't gone that far but I do have a load of iPad  and Logic synths, some of them sound awesome but I never use them. I much prefer real hardware.  I guess I'm one of these people who like playing with their knobs.

[minator]

Edit: are there good music apps for droid?

The latency on Android is atrocious, it makes it completely useless for audio apps.