Alien frames aren't even for sale yet and are crazy overpriced. Sparton are garbage, let's not lie to ourselves here. Aggressive geometry can mean a lot of things, but unless the bike has an insane wheelbase all somebody new is going to notice is the fork rake and how twitchy the steering is, which is the product of bar/stem choice as well anyway.

The Taiwanese frame makers are starting to do lugs again, look for offerings from bikesdirect, Soma ($$ but nice), possibly some big brands soon. These will not be cheap, though.

If your ego can handle beautiful forged campagnolo old school road dropouts rather than crap modern track ends, find and old criterium-style road bike in your size and you will be happy. Raleigh Professionals from the mid 70s have been closing for stupid cheap on ebay, and they're beautifully lugged and made from Reynolds 531 steel, which nobody has ever gone wrong with. Plenty of other stuff out there, though you have to know a bit about bikes to know what has tight geometry.

Used track bikes are an option as well, good advice above.