i m playing mk250 on my hand now ..if i can only pick one woofer , i guess i will go for velodyne or martin logan , mk250 have very great speed ,great punch ,but surround bass was 0 ,not deep at all , gravity was not enough as well (may be back fire better ), i rather pick some band more balance , owns everything , then i can play easily have good sound .
martin logna old model 10" was on sale now .go test it , only 3k per piece, buy 2 piece 6000.very good deal
i have another woofer velodyne spl1000r at the same position when i test . the most problem for me was the gravity was not enough , back fire can solve this problem but the speed will be affected as slower .in the other way , velodyne have a better gravity unders the same sit., my position was not a corner , around 9 feet distance, but still i guess 9 ft was not enough for 12 " woofer , thats why the speed of velodyne 10 " have the same speed as mk . i did heard mk 250 having 13-15 feet can have a lot more strong punch n speed , but still no surround bass n gravity at all .