I always liked Java bikes. They sell a few different folders and minivelos with disc brakes that are good value.
I found a new top end mini with aero features, the Freccia, wish it had discs though.
The graphics are crazy but otherwise not a bad value when compared to other carbon road bikes.
Saw it on ebay too but that link may expire.
JAVA Freccia 451 Carbon Mini Velo Bike 20? 1 1/8? Minivelo Bicycle With Sram APEX 20s | Racing Bikes