Playing 1/2; have longstanding history with villain who is an incredibly aggressive fish, shows down any two cards, and has shown himself willing to make all-in bluffs and overbets. (I am unsure as to his image of me.) He's tilted off 2 or 3 buyins on another table prior to this hand. My read on him is that his big bets are slightly weighed towards bluffs rather than for value.
Hero: 400
Villain: 500
Hero raises villain's straddle (5) to 20 in MP with K
Q
All fold except villain.
Flop: A
6
3
Villain asks me what I have, I reply that I have a 'fairly good hand' and he open shoves all in (400 into a pot of about 40.)
My thought process here was that value hands are rarely played this way, so it is most likely some kind of semibluff. If it is a semibluff I have him crushed, and if he happens to have a value hand I have decent equity. On the other hand, the pot is really very small, and it's good to pick a less marginal spot (i did stove it and if i did it right i have 58% equity against non-set hands.)
Any thoughts?