Peter-
No trade-off that I can detect.
All the effects sound just like the ones on my other 4 'Factor pedals.
This is a no-brainer. The H9 is a huge step in the right direction. The only thing I miss is the tactile knobs on the other pedals. You need to be connected to a computer or iPad to effectively adjust it.
I hope that 2014 brings some further UI refinements to the iPad and computer connections. It still is a bit clunky, but it does work.
And to those that complain that it can't run more than one algorithm at a time: Just buy another one and put it in the chain. Eventide lets you have up to 5 H9s on one account, so you can share all your algorithms. You could sell a couple of pedals you aren't using (who doesn't have a box of those, anyway…?) and get yourself a second H9.
A no-brainer for sure.
