Reads: Sb was chip leader at my table for most of last 45 mins, solid player. Making just enough moves at pots for it to be hard to tell when he had the goods and when he didnt.
Table image: I was playing fairly tight but defending my blinds aggresively when I felt I was ahead, I had only shown down solid hands in the last hour.
Full Tilt Poker
No Limit Holdem Tournament
Blinds: t300/t600
(Ante: t75)
9 players
Converter
Stack sizes:
UTG: t7890
UTG+1: t11398
MP1: t23381
MP2: t9790
MP3: t8890
CO: t4938
Button: t9780
SB: t18256
Hero: t13880
Pre-flop: (
9 players) Hero is BB with
5 folds, CO calls t600, Button folds, SB calls t300,
Hero raises to t2600, CO folds, SB calls t1400.
Since neither the CO or SB raised I didnt put either of them on a stronger ace, so I raised to try and take the blinds down here.
Flop:

(
t6475, 2 players)
SB checks,
Hero bets t3500,
SB raises all-in t16181,
Hero calls all-in t8305.
Uncalled bets: t4376 returned to SB.
This is the call in question, I thought there was a good chance SB had a queen. But he might have put me on a steal and I'd seen him make strong reraises to win pots before, once showing down a weak draw and losing. The pot is also big enough that winning here means final table. Does the size of the pot and the chance I might be ahead (25-35% in my estimate) justify this call?
Turn: 
(
t30085, 0 player + 2 all-in - Main pot: t30085)
River: 
(
t30085, 0 player + 2 all-in - Main pot: t30085)
Results:
Final pot: t30085
SB showed Ts Qs
Hero showed Jc Ad