One of the first small cobb's i thought of was a 25xx series but have noticed the vero18 and 121 seem to be a much better small cob for the money these are what ive been thinking about adding to get the lil more light these overgrown mephisto autos need. even thou the autocobs would a great possitive move to getting all this various lighting out of the tent and make for a much nicer and cleaner setup.