I would say avoid Seimens like the plague!
I have a Amilo and it has recently been away for it's 2nd warranty repair in 8 months and came back with the same fault only worse and the case not properly fixed back together with a screw missing too!
Also the internal battery has failed and they re only warrantied for 6 months = £100 + for replacement.
The case paintwork has worn away on the surface where you wrist rests and the screen hinge is loose.
This machine is used mostly at home and treated well.
PW