100NL: River trips, value bet?

I forget stats but villain is a decent reg.

$0.50/$1 No Limit Holdem
6 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG ($103.53)
Hero ($101.50)
CO ($242.45)
BTN ($97.26)
SB ($200.16)
BB ($100)

Pre-Flop: ($1.50, 6 players) Hero is UTG+1 3 A
UTG raises to $4, Hero calls $4, 4 folds

Flop: 10 7 Q ($9.50, 2 players)
UTG bets $6.77, Hero calls $6.77

Turn: A ($23.04, 2 players)
UTG bets $16.41, Hero calls $16.41

River: A ($55.86, 2 players)
UTG checks, Hero ???

I dont see him calling with less than A here. You called 2 pot sized bets and beting know just wont be profitable enough. You can save some money against bigger A with check. And above all, he is a decent reg. Check!!

I on the other hand think you should bet this as the two running A's discount the possibility of you holding A as well so he might be inclined to call with worse hands like KK, Qx and maybe JJ. KJ, TT and QQ are the biggest threats range wise, although not sure how much he'll have KJo as opposed to KJs.

I realize this is all very narrow but I think a bet can get you enough calls with worse to make it profitable (Not doing the math though).

I also think that you have the best hand here and should bet the river, because i don't see him holding anything better than two pairs or some big pocket pair, or Qx...

after check on the turn just check this river. sexy bets like $6.77, $16.41 etc coming from decent reg. are funky traps on nl100 (at least in 90% occasions).

So I bet an amount I think a Q will call and...

River: A ($55.86, 2 players)
UTG checks, Hero bets $15, UTG goes all-in $76.35, Hero NOW WHAT??

Fold preflop

Now you call. Your bet is iffy and he might be turning hands into bluff here, or he can do this with KK exactly because of the running aces. Had you bet a normal, bluffier amount it would be easier to call it off here.

I mean, if you're beat, you're beat, but I still call and hate everything about hte hand since the start.

Fold or 3-bet PF not close. Fold or raise flop not close.

It is so insanely rare he's checking this river with AJ or better I would bet this for sure, for like $22 or something.