Zu Druid upgrade kit


I have a pre 2008 Druid and am thinking about upgrading it with the Zu upgrade kit (now available upon request at approx. 650$)and wonder whether this is a sensible proposition. How does the upgrade model compare to the pre-08 version and would you recommend this route as a short-term upgrade or rather save for another model such as the Essence?

has anyone used the Essence/Druid with Peachtree Nova? looking for a simple 2.0 set up in my office.

I current run Totem Arros (my favorite speaker, to provide some insight into my preferences)

I also have B&W 683 5.1 set up in my HT room. Dont mind the 683 in 2.1, but i dont feel they are as musical as the Totems, however thats for another tread. Thanks in advance!
some people like Nova, if your room is small enough it could work. I think Druids really need about 60WPC. DAC in Nova is very good.

If you have digital source Nova is probably good match.
Hass perhaps soemone tried the Druids with 845 SET amps like the DeHavilland G845 or KT88 amps? Would that be a good fit?
Zus with 845s are a great match from what i've heard (i've heard them on Defs, not Druids thought)
The 845 SET powering the Zu FRD in any configuration is synergistic; a perfect fit. One of my systems has Audion 845 Black Shadow monoblocks powering Zu Definition 2, and I sometimes switch the 300B PSET monoblocks I run into Druid Mk 4-08 with the 845s. It's always a strong combination, dynamically vigorous, tonally rich, strong bottom end, meaty attack; beautiful yet unretiring.