The SX2 is a much smaller machine 50kg vs 111kg.
I've recently purchased a Axminster SX2.7 mill. Axminster have introduced a v2 model which has a rotary dial for the speed control but basically looks the same as mine if a little more expensive.
I paid about £1,500 for it and the 3 year warranty drove the decision to by the Axminster version.
The SX2.7 fits nicely on the bench and has been cutting metal straight out of the box.