50NL: 2 hands vs. nits

Better to call flop or get it in? Villain is 11/9 How is it as played?

$0.25/$0.5 No Limit Holdem
5 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG Hero ($51.34)
CO ulikeme9 ($45.61)
BTN Retromobil ($85.90)
SB Durrrrrst ($50.25)
BB bluffman778 ($57.63)

Pre-Flop: ($0.75, 5 players) Hero is UTG 8 A
Hero raises to $2, 2 folds, Durrrrrst calls $1.75, 1 fold

Flop: 2 4 3 ($4.50, 2 players)
Durrrrrst checks, Hero bets $3, Durrrrrst raises to $8, Hero calls $5

Turn: 9 ($20.50, 2 players)
Durrrrrst bets $12.50, Hero calls $12.50

River: 3 ($45.50, 2 players)
Durrrrrst goes all-in $27.75, Hero folds

Final Pot: $73.25

Durrrrrst wins $71.25 ( won +$21 )

Hero lost -$22.50

Similar type of villain, 17/13 so still nitty. What do I do here? The other guy is a regular shortstacker with also very nitty stats (I forget atm but they're "red" on my HUD).

$0.25/$0.5 No Limit Holdem
6 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG Tiger85m ($20.45)
UTG+1 bezahlbar ($52.05)
CO Hero ($50)
BTN wiIdcard ($9.25)
SB Xayc_MD ($52.87)
BB kevo1313 ($52.25)

Pre-Flop: ($0.75, 6 players) Hero is CO J J
1 fold, bezahlbar raises to $2, Hero calls $2, wiIdcard goes all-in $9.25, 2 folds, bezahlbar raises to $19.50, Hero ???

I tend to get the NFD's in (especially with the added gutshot) on the flop. There are lesser flush draws that can call and some better hands that will fold so you are never in bad shape + you win a lot with A hi on flop by playing so. When you're called only thing you hate seeing is a really strong hand like a set or flopped straight, but even then you're not in terrible shape especially on this first flop.

Not really sure about the 2nd hand, but I'd get it in as well although he has to call now. I hate it that he is UTG and nitty though but there are weaker pairs in his range (not sure how he plays them against a shortie shove) and decent amount of broadways so I think you can get it in here.

hand #1 jam flop

hand #2 i think you can fold if the pfr is nitty and utg but since he's mp i'd get it in

1. hand - reraise flop or fold...

2. hand - I don't think you can fold this...I think this is a classic sutuation and he is trying to kick you out of the pot...than he would have a coinflip 50:50 chance with wiIdcard and with you in hand only 30%...