I pulled 2 shots with the TWIST last night. 1st shot I didn't have the grind right and it was a little underextracted. With a slight adjustment to the grind and I had a great shot. I pulled one also with my Brasilia at the same time as the 2nd shot and compared the two.
The TWIST was a little brighter, but still good. The Brasilia was creamier. For a travel machine it think the TWIST will be great.
The key will be to get a good source of hot-enough water. I used water from my hot-water tap on the Brasilia and pre-heated all the metal parts of the TWIST. The only issue is the small O-ring for the N2O fell out during the pre-heat. Care needs to be taken to make sure it doesn't wash down the drain. I plan to have extras on-hand.
I'll try and get a few photo tonight of both the Brasilia and TWIST.
I'm looking forward to comparing the TWIST to the Handpresso.
more to come.