I have used MBAM v2.0 since beta testing. There seem to be a few glitches to be worked out.
In fact MBAM is currently beta testing again. I'm not beta testing this time around.
Rootkit scan can be disabled via the GUI.
Scan run times are different than on v1.75 due to fact that MBAM seems to do more thorough scans.
Personally I prefer v2.0 over v1.75 because the detection rate appears to be higher (my experience).
If you pay attention successive pop-ups are due to different detections on a webpage.
I haven't had any issues saving the scan results to a "text file" which can be opened in a word processor
like LibreOffice or Kingsoft Office Free. High CPU usage was present in the beta but was fixed in the final release.
Bottom line, I'd go with MBAM v2.0.
edit: Real time detection in MBAM Premium v2.0 is more sensitive than before.