intersting AK hand

[vkotlyar]

i have a relatively tight image and havent really been caught out of line. Both of my opponents play bad when stuck, but they are winning tonight and tend to tighen up when they are up. Both my opponents cover me. I have $900
2-5 blinds NL
MP1 opens for 30, MP2 calls, i call w A [img]/images/graemlins/spade.gif[/img]K [img]/images/graemlins/heart.gif[/img] and SB calls
FLOP: 9 [img]/images/graemlins/spade.gif[/img]10 [img]/images/graemlins/diamond.gif[/img]J [img]/images/graemlins/club.gif[/img]
sb checks, MP1 leads for 50 MP2 folds, I call, and SB calls after much thought.
turn: 5 [img]/images/graemlins/heart.gif[/img]
sb checks, MP1 checks, i bet 225. SB goes in the tank for a few minutes and finally calls. MP1 folds
river: J [img]/images/graemlins/diamond.gif[/img]
sb checks and i bet 400.
any thoughts?
V