I do use the MS Nova Phonomena I with the battery. I also use the SoundSmith Aida which is a cart that uses the BO MMC design principles. It's an amazing combo. I don't think you would be disappointed with the MS Phonomea. It is very neutral and transparent. Nice sound stage and very good dynamics. I can also say that without the battery on there is very little difference. Maybe a bit quieter but talking a very small amount. I have heard some phono pres at double the price that barely edge the Nova out or are just different but not really "better"
I had the ifitube buffer and thought it was good performance for the buck.