Reply to iphone/ipad app reviews/suggestions

hey all,
was wondering who here is using an ipad for beat making, fx control, etc - and which ones they're using.
i don't have touch OSC yet but will get it right away. i do have iElectribe from Korg and would really like to get the iMS-20 app from them as well.

the electribe app is pretty cool. i haven't used an actual electribe before but this makes me want the real deal even more. i know the real version is more powerful in a lot of ways and i personally don't believe physical knobs and buttons can be beat, but it's a pretty cool app. $20 is a little steep maybe. $10 would be a steal and maybe $15 would be fair.

i've researched a few others out there, but there's so much - thought maybe there were some hidden gems?

anyone want to share which apps they like best?