Overall table is loose passive. Lots of 5+ limped pots. Hero seen as TAG. I've had several showdowns in which I've shown great hands both pre and post flop when I have lead the action.

Hero ~$410 in CO w/K8

Normally I'd fold pf, but with 3 limpers to me, some with medium deep stacks, and a high likelihood of BTN calling and blinds completing, I call, and the remaining three enter the pot by c/c.

Flop $16 after rake.

K87

blinds check, V1 (~$150) fairly new, but seemed loose-passive, bets $11.

V2 (~$243): Late 50's oddball fish, ~50/15 pf, sometimes passive post, sometimes randomly aggressive w/over valued hands like TP. Sometimes takes stabs at pots with air. Likes to chase draws.
Ok post flop. Takes advantage of other player's fit/fold mentality. Knows that I'm usually strong when betting.

calls

Hero raises to $40, btn+ rest fold to V2, who calls.

Turn ($107)

K8710

V checks, Hero bets $80, (Miscalculated pot when betting. Meant ~2/3pot) V insta shoves $200 AI,

We're getting better than 3:1 here, but the move seemed strong. Based on reads given, do you think there's enough lower hands in range to call, or is folding too nitty regardless?

I could put him on a worse 2p (T8) or combo draw (T9), (KJdd) but that feels like the bottom of his range. If he was deeper - I'd have to fold. But it's only $120 into $400 to close the betting. With your read (randomly aggro) - it's a call

Where are V1 and V2 seated? Makes a bit of a difference. Do you have any idea if villain would do this with T9 or Ad7d that has some chance of actually being best and outs if it isn't?

A villain with a set might be willing to give you a card on the flop be decide the turn makes things too dangerous. I expect there is also a chance villain has something like T8 and doesn't put KX two pair hands in your range. I think it is a call given those odds from an aggressive villain.

Agree we are priced in based on villain description. Too many pairs with open ended straight draws in range to fold. Maybe even a sneaky aa