Two very different hands. First one strange, second more standard. Advice?

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) converter

UTG+2 (t755)
MP1 (t910)
MP2 (t805)
MP3 (t1615)
CO (t755)
Button (t555)
SB (t935)
BB (t285)
Hero (t800)
UTG+1 (t585)

Preflop: Hero is UTG with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises to t70</font>, UTG+1 calls t70, UTG+2 calls t70, <font color="#666666">2 folds</font>, MP3 calls t70, <font color="#666666">2 folds</font>, SB calls t60, BB calls t55.

Flop: (t417.50) 4[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, BB raises [t230] , Hero...

Do I just muck this, assuming that with so many callers I'm beat by AJ/JJ+ here? Was really strange, I don't usually get more than 2 callers there.



Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) converter

SB (t725)
BB (t785)
UTG (t785)
UTG+1 (t800)
UTG+2 (t770)
MP1 (t800)
MP2 (t800)
MP3 (t1010)
Hero (t800)
Button (t725)

Preflop: Hero is CO with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, UTG+2 calls t15, <font color="#666666">1 fold</font>, MP2 calls t15, <font color="#CC3333">MP3 raises to t85</font>, <font color="#CC3333">Hero raises to t250</font>, <font color="#666666">3 folds</font>, UTG+2 folds, MP2 folds, MP3 calls t165.

Flop: (t555) 4[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
MP3 checks, Hero...

Do I push here and just take the beating if I'm up against AT/TT+, or do I just check/fold? Am I overplaying AK with my re-raise? Should pre-flop be push/call, not raise?

Thanks,
Will