$1k preamp for McCormack DNA-125 recommendations?


I'm looking to get a nicer preamp to pair with my McCormack DNA-125. I'm looking to spend $1k or less for a new or used unit. I have no set preference for tubes or ss, and the pair would be driving my Ohm Walsh Super 2's (awesome speakers!). So far my short list includes:

- Mapletree Audio Line 2A SE or Ultra 4 SE
- Rogue Audio 66 or 99
- Manley Shrimp
- McCormack RLD-1

Are there any others that I should seriously consider? My current plan is to feed a Squeezebox & cd player to a Channel Islands VDA2 w/ VAC PSU - but if there's a better integrated preamp/dac that falls under the $2k mark I'd be interesed in hearing about those as well.

Thanks in advance!
sersalpha
Thanks for the suggestions. I'm strongly considering going the passive route at this point, but my mind isn't made up yet. I'm also considering picking up a Promitheus Audio TVC.
Sersalpha,
For what its worth I've been using a Promitheus Ref 4 with my DNA-1 monoblocks for about a year. It is a very satisfactory pairing to my ears and is well within your budget. It is much, much, better than the TLC-1 and Endler attenuators I used previously. I have not heard the C-core model, but that would also be comfortably below your $2K limit.
I am using a benchmark DAC1USB as my preamp. I thought about getting a preamp, but why use the extra component when the sound is much better going from source to DAC to amp?

BTW I HAD used a very nice tube preamp (odyssey candela)
vs. the dac to amp configuration. The latter sounded much cleaner and clearer. No coloration to the sound. Less is more???