I am considering upgrading my pre-amp. So far I am thinking of Bryston BP25P, Moon p-3, Parasound halo P3?

My current system is Linn Genki CD, Linn Kolektor, Rega P3, Bryston 3B SST, KEF REF 3, Monster M1.4s bi-wire, Ultralink Audiophile MK2 etc.

I dont feel feel I am getting the most out of my system and feel the current pre-amp is the week link.

I have seen the moon p-3 for $1700.00 used 3years old, the Parasound for $1,000 new, Bryston $2700.00 new (all $CDN) etc.

I am a bit of a value shopper and like to get the most for the least
$2800.00 (CDN) is probably the max budget for this but would be happy to pay less if I could get close to the performance of the more expensive choices.
any advise or opinion would be appreciated.