50NL - KK vs turn donkbet

[InfectorGadget]

Just sat down after Party was down a little, but I have raised the few hands weve played and villain called me in one of them where the flop was all diamonds he bet half pot and I reraised him to almost pot and he folded. Then he was in BB.

Then this happens:

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

BB ($12.27)
<font color="#C00000">UTG ($39.41)</font>
MP ($49.67)
CO ($54.05)
<font color="#C00000">Hero ($56.05)</font>
SB ($41.75)

Preflop: Hero is Button with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.25.
UTG calls $0.50, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $2.5</font>, <font color="#666666">2 folds</font>, UTG calls $2.

Flop: ($5.75) 6[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $0.5</font>, <font color="#CC3333">Hero raises to $4.75</font>, UTG calls $4.25.

Turn: ($15.25) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG bets $5.50 , Hero ...

How much to bet here? Allin or just call? I guess there is to much draws there to call, but is allin a bad move here?

[Petter]

If you move all-in, he will have to call about ~27 more and the pot is ~26 at this point.

The pot is so big so I think you have go all the way and push it in.

[Sir Winalot]

I shove here.

[orange]

Shove for value I think.

[Mrage]

Shove is a good idea here, looks like a flush draw trying to price himself in.