I've had both, still have a two-way, its a pretty awesome seat
I also have a free-way which is very similar to the hi-way/max-way. My son hated his Multi-Tech and couldn't travel more than an hour in it without screaming, I have no idea why, he loved the free-way however.
My friend has a multi-tech for her son (who is 1) and he loves it, falls asleep in it every time they go in the car
It is a beast of a seat though, similar in weight & size to the original Frontier.
I have only used the Two-way forward facing, for a friends son, it took about 3 seconds to install & has a super smooth adjuster
ds is 5.5, pretty tall and still fits in it both rear facing and forward facing
I understand wanting to import a seat, I am looking at a Britax Marathon 70 at the moment, it just seems like the perfect, super easy to install and use in any car - spare seat lol the one downside to Swedish seats that I have found is that you dont want to be switching them between cars often, the tether threading gets to me lol