The Naim forum is available through Naim's webpage. This forum's a lot more objective than that one is. There are some very knowledgable people there, and a lot of great info. Naim guys may be the most fanatic in hifi.
I guess most non-brand forums would be pretty objective. The guys here are pretty good.
Granted, I'm on a Bryston board and own a B60, but I consider myself pretty objective. I demoed both side by side. I really like the Naim sound, but at the end of the day I found the B60 better. The sound was what truly made up my mind, and the other stuff was icing on the cake. What good is a 20 year transferrable warranty and great support if you don't like the gear?
The Naim guys will tout PRaT and say Naim's the only one who truly gets it. Trust me, others get it too. Bryston definitely gets it, as do several others. I think PRaT may be the single most important aspect to my ears, but that doesn't mean it's the only aspect. In hifi ways, the B60 trumps the Nait in every way. The Naim guys will agree with that. But the B60 boogies and grooves just as good as the Nait does.
If you're serious about buying a Nait, you really need to look at the rest of the system. Naim just doesn't sound right with most non-Naim gear. The only other CDP/DAC brand I'd pair up with it would be Rega.
Speakers are a bit easier to pair up with the Nait. Naim's speakers are a very acquired taste IMO. The Dyn Focus 110 pairs up pretty well with the Nait. Not the absolute best pairing IMO, but it sounds great nonetheless. If you've got a larger sized room, it may struggle a bit. The B60 sounded better with the 110s to my ears. Yes, I auditioned them with my B60 and a Nait, side by side.
The B60 had a bit better grip and controlled them a touch better. The Nait loosened up a bit (I guess that's the best way to describe it) when pushed a little, whereas the B60 composed itself better when pushed a bit further.
Again, I really like the Nait. I'm not bashing it in the least bit. With the Dyns, which I didn't buy, the B60 sounded better. With other some other speakers like Linn Katans, the gap was narrowed. The 110s aren't too hard to drive, but they're not the easiest by any means. I think Bryston's dual mono power supply definitely helped keep control a bit better.
If I didn't come across the B60 I bought, which had the right options and price from the right guy, I'd have bought the Nait. No question about it. It's an excellent amp. Not sure what your source currently is, but if you go the Naim route, you won't be happy over the long haul without either a Naim CDP/DAC or a Rega. If you buy a Nait and not a Naim CDP, be prepared to buy a DIN to RCA interconnect. The DIN inputs are a good bit better than the RCAs. Naim doesn't truly shine until you take advantage of their star grounding scheme, which only really works through DINs and works best with Naim sources, because the were designed to do so.
Just some thoughts. Also keep in mind that Bryston costs far more in Europe than in the US, thus widening the gap in the cost to sound quality ratio, further influencing the European guys' VFM with the Nait over the B60. If I were in the UK, I'd buy a Nait over a B60 too. Bryston gear is pretty much double what it costs here.