Soma Rush isn't lugged. Alien is. If you get the Soma you may as well just get the Kilo TT frameset from Bike Island, imo.

http://www.leaderbikestore.com/pd-ld...rack-frame.cfm

This is another frame I thought of. Simple, lugged. But also twice what you wanted to pay. I am only including it because I once saw this frame on eBay for less, and once on their site with a discount. IMO the lug detailing is nice, have the option to get a threaded fork (I assume since you like lugs you probably also like quill stems.), and some other carbon options as well.

Like I said before, the previous model FTPs are super nice. I personally like the 09 frameset more though, so I'd probably not get it.

I recently got a Cervelo P2T that I am extremely pleased with. An old frame, but I didn't have to resort to a Concept and I can take it to the track.

Like Pedalling said, the T1 might be an option if you can get it cheap.

If you want a Pista, cruise your local CL. I found this earlier today: http://atlanta.craigslist.org/bik/1178405005.html

Not a bad deal considering it comes with Brooks Saddle (not B-17), AND Brooks bar tape. Full bike for $400. You might find something similar in your area.