on river, when you have less than 2/3 a pot sized bet behind, any hand that calls you is calling any bet you put out, so it might as well be all in. it doesn't make sense to bet less if he'll call more, and you won't ever be bluffing for a smaller amount in a similar situation.

yah i choose fold with those smaller pairs because really youre going to check/decide way more than you want and you have to do it for usually more than one street because he's not gonna just cbet give up on a lot of run outs since cbetting is so common (and floating is so common) and. i don't want to set mine unless you're literally ck/folding all other times you don't flop a 7 because all the times the board looks safe you're stil guessing and you'll likely lose money postflop against a good reg in position. it seems weak, but think about what kind of chips you lose post flop. i know you won the hand, but it was played a tad unconventionally, and we can't expect it to play this way every time.

i think 88/99 are just higher and have the ability to 3b/c because you take away 6 combos in the 4b jam range that beat you. not that he'll be 4b jamming 77/88 necessarily, if you have 88 and he shoves 88+, you now force him to have a larger % of hands you flip with. when you get 77 against his range of 88+, he has 6 combos that run 4:1 against you that he doesnt have when you have just one hand better than that. now he only has 1 combo of equal strength, and a higher % of broadway hands.

i try not to play a ton of hands against reggy players oop when they're ep unless we've played enough that they clearly open light, in which case ill start 3betting/call wider, and usually try not to play otherwise. i don't know if i miss spots, but i like attacking regs in different fashions than the obvious spots we take over their obvious spots (opening as a steal in ep is obvious nowadays, so naturally 3betting from the absolute last/best position to do so is going to be the next step and has become pretty obvious as well). a note on why i feel the bb is the best position to have now is that it's slightly cheaper for you to do so (because you have 1bb in the middle that is not yours anymore), you have only the original raiser left to act, etc. his positional advantage is pretty much nullified since you're not shallow. if you're to 3b, he should be 4b or folding mostly and if he flats, his having position only helps him for pretty much one more street at any point in the hand because spr is so slow.