Been diving my Nova now for a while and absolutely love it.
I've got the Kubi rings and would leave them out next time as I found my hands will keep just as warm in good gloves.
I have Si-tech silicone seals and love them, I'm never going back to latex.
Initially I was disappointed that my Santi BZ400 does not comfortably fit in the snug suit, but I'm not too fond on the BZ400 anyway since I need to carry too much lead (a whopping 16KG) to sink.
So I just use several layers of other stuf and when it gets too cold for that, it is too cold to dive.
Having said that I had no problem diving all winter last winter without the BZ (Global warming does have its upsides).
If something would happen to my suit I would not hesitate to buy a new one. For this price (I paid I think €1300,- all in) it will be hard to beat.
Just thought I mention it