Ceramic Pickups and the are HOT as 10K bridge and 8.4K Neck.
Beware, DC resistance is only helpful to compare pickups with similar build / magnets / wire material and gauge (well, a 20K pup will probably be hotter than a 4.5K one for most magnets and wire, but...).
The Flat 50s seems to be described at meaty rather than twangy and I really like Roy Fulton's demo.
IIRC, these were the first Flat 50 incarnation, now known as Flat 52 (please someone correct me if I'm wrong). The new Flat 50 are hotter and beefier (as far as I can tell from soundclips), but the neck don't have the "stratty" character of the F52 neck.
I have no experience with the MiM ceramic pickups so I can't compare, all I can say is that the BFG52 bridge is rather powerful but not OTT, very "raw" sounding, with enough twang to sound like a Tele but no ice-pick and definitly more meat and growl than most Tele bridges I've played, and it fattens nicely when rolling off the tone pot. The neck is something special, sounds very stratty, which may or not fits your needs - I just love it as far as I'm concerned but YMMV.
My 2 cents.