Quad Cortex : It's still in "early access" mode

The good stuff:

- It sounds amazing

- Interface is quite intuitive

The bad stuff:

- There's still no desktop/mobile editor which should be available since day one!

- a lot of people are experiencing wi-fi issues (device must be connected to wifi to update and most of the times it fails to connect)

- a lot of users are experiencing sound issues when using it as an USB interface (the last update fixed it for me, but not for everyone)

- DSP gets filled up very quickly (but they are optimizing it and it's getting better with updates)

- limited amps/cabs/effects

It's still early in development, so you're more or less buying a promise at this point. It has great potential for which I believe it will achieve, but for now, I can hardly recommend it.