ProAc D Two and an amp to live with forever


So, before the economy falls into the bottomless abyss, I likely have one chance to pick up an amplifier that I can live with for a long, long time.

I currently have a Naim Nait 5i powering what are clearly speakers I love. Really love. And the system sounds pretty good to me. But, I know from hearing other systems that these ProAcs can sound even better. By better I think I mean primarily richer, fuller and more lush. Not surprisingly, most of the systems that sounded better were tubed systems and I have never owned a tube amp.

The Manley Stingray has sounded fantastic to me the few times I have heard it, but I am unsure that it is the amp that can make the most of these speakers. If it is, that's great since its the cheapest option I am looking at now (cheaper suggestions welcome) and I am predisposed to like it.

The PrimaLuna Prologue and Dialogue are certainly tempting based on reputation, but I haven't heard them at all.

And the Cary SLI-80 from a feature standpoint have everything I am looking for (I think), including a remote and headphone amp, but I haven't heard this for more than a minute. This is also the absolute upper limit of my price range - in fact, this would likely be a used purchase, where with the others I'd look for used, but maybe buy new if I got tired of waiting.

I can, and will, listen to all of these. I can't listen to them with my speakers though due to the vagaries of local product line distribution. Home demo isn't likely to be an option since I am a recent transplant without any sort of relationship with the local dealers either.

Source is a Benchmark DAC. Music is jazz, latin, rock of the Tom Waits and Pixies sorts, and even a little Buck 65 style hip hop (and for those that don't know, this is more like Tom Waits than Jay-Z, but it still has some beats behind it that the kids like).

What else? Almarro and Audiomat have caught my eye at various times. And I have heard the Ayre integrated sound really good in several systems, but I am not sure it would get me what I think I want. That said, despite the longing-for-tubes set up above, at the end of the day I am looking for synergy and am willing to go in most any direction to get it. I would appreciate hearing from anyone with words of wisdom.

Thanks in advance!
yph
Another amp to consider if you're looking at the Primaluna and the Cary amps is the Rogue Cronus integrated. I'm using one with a Benchmark DAC and Devore Gibbon speakers and it's a wonderful combination. It has a remote and headphone amp, is very easy to bias and the service from Rogue is outstanding.
Stereophile magazine recently commented how wonderful the ProAc D2s sounded with the Leben CS600 amp.
Beware though, if you go with Leben CS600, it only puts out 32wpc. This may be plenty for you. But if your room is large and/or you listen to loud levels this might not be powerful enough with those speakers (88.5db; 8 ohms nominal).
BTW - I have NO experience with either the Leben or ProAcs. I was just making an observation.