I posted this with two other hands a few days ago but it only got two replies. I think this is an interesting hand and I'd like to hear more feedback on it.

MP is a donk. I didn't have reads on the other guy. What's my best play on the flop?

Party Poker No-Limit Hold'em, $1 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($103.60)
Button ($182.40)
SB ($83.41)
BB ($111.35)
UTG ($154.71)
MP ($68.05)

Preflop: Hero is CO with K, A. SB posts a blind of $0.50.
1 fold, MP calls $1, Hero raises to $5, 1 fold, SB (poster) calls $4.50, 1 fold, MP calls $4.

Flop: ($16) T, J, 6 (3 players)
SB bets $7, MP raises to $14, Hero ...?