Welcome to the forum, Shaymon.
It took a little digging and reading to find out that you are probably in the UK, that is why it is important to list some more detail about yourself in the introduction and/or profile page.
Dr. Agar of Victoria, Australia has done a very good and comprehensive writeup on NHHD in answering your question which you may have posted here:
http://forums.homedialysis.org/showthread.php/2641-Machines-for-NHHDI am not aware of any UK NxStage users here in this forum, but perhaps if you asked your question again, specifically seeking input from current and potential UK users of NxStage and/or NHHD, you may get more useful answers.
There are some risks associated with NHHD and it is not approved by the FDA in the US, perhaps that is why your clinic/hospital is not encouraging anyone to start such a mode of HD for patients starting out doing HD.