Yeah, that 3 Move is a sweet lookin' amp. The Meier crossfeed is very good based on my experience with a Porta Corda Mk III. I find the XM5 crossfeed to be just as good as Meier...I'm very impressed actually.
I didn't like the Xin crossfeed when I owned a SuperMini IV. Even after Xin updated it and checked the crossfeed it was still no better for me. It was way too mono sounding and unusable to me.
Not a lot of choices in portables afaik. Aside from the Corda (I looked at the 3move when I was shopping) there's also the Practical Devices XM5 which I chose for myself because it had more features and adjustments that I use.
A basic XM5 costs less than the Corda but if you get the XM5 upgraded with various things it can go well past the price of the 3move.