upgrade suggestion please for Zu Omen def


Although I am quite happy with my system, the upgrade bug bites me again. My current system has the following:

Computer
Audiogd NFB-3 DAC
PrimaLuna Prologue 3
Cary SE-1 power amp with 2A3 tube
Zu Omen Def speakers

Based on the reviews and comments, I am looking into the following options (and I didn't heard any of them)

1) replace Cary SE-1 to Melody I2A3
2) replace PrimaLuna and Cary with Almarro 318B
3) replace PrimaLuna with Supertek preamp

I think all the Melody I2A3, Almarro 318B and Supertek all with excellent feedback. The Melody I2A3 has rave review and match very well with Zu per the 6moon review. The Supertek has rave review by the community. The Almarro has rave review in 6moons as well.

Is there anyone has experience with any of them with Zu Omen Def can comment? I like to listen to female vocal, guitar, violin and saxophone. To keep the discussion focus, please limit to the options above.

Thanks in advance
gte357s
There are three differences between the Omen Def and the Superfly.
1. silver in Oil Mundorf caps
2. Internal Silver wiring
3. HO Drivers

I have all three so I cannot comment on which is most important. However, I can say that the upgrade is very very significant. Increased intimacy, better imaging, and much smoother mids and highs.

I'm in the Bay Area if anyone wants a listen or demo. And I may be downsizing my collection soon so they may be for sale soon.
I finally got a Almarro, and so far it is very good. But I have a question. Should I connect to the 4 ohm or 8 ohm output? I check the spec, the Zu Omen Def is 6 ohm.
The general advice it to forget about the rating and just try both and see which you prefer. Either one is safe and will nor hurt your amp or speaker.
Thanks. I have one more ignorant question.

I am tempted to connect my Prima Luna preamp into the Almarro and see how does it sound, because I read a post that someone put a preamp with Almarro and he likes the result ( I can't remember where I read it)

My question is, it won't have any harm on my unit by doing so, am I correct?
Another alternative would be an Audion Silver Night Anniversary or their Duo. This is also an insanely good match: I will most likely go for either the Melody i2A3 or the Audion, but I have the Essence speakers.