If you are from the States, whats the Cambodian Bank to use? Im leaning to ABA because its Canadian owned, I really dont want to be buying bhat with USD and then converting, but one of my cards (Transferwise) is supposedly unusable in Cambo and I dont like using my US cards overseas.

ABA hands down the best bank in Cambodia

Avoid ABA like the plague. My average wait times for ATM and counter service are double what they are in ACLEDA, the staff are useless and nI have had some pretty grubby notes from their ATM's which seem to be powered by slugs on mogadon. ABA has been a victim ofits own success. there is nothing you can dowith the ABA app that you cannot now do with ACLEDA toanchet, although its not so pretty. Also have grave security concerns over ABA app. you have a 6 digit pin but the app only requires the first 4.
If you never go to the counter and onlyuse ATM'sout of hours oryou do not live near an ACLEDA then ABA is probbaly better than the rest. I closed my ABA last week after waiting for a ridiculous 40 minutes to do a wire transfer that usually takes 10 in ACLEDA. Also i am suprised what you say about transferwise. i have just been speaking to them and you can transfer money to and from cambodia., which revolut will not let you do anymore. it is far cheaper to wire money to a Khmer bank and use the local ATM card

Transferwise is telling me that I can't use their worldcard there because I'm from the US. I don't think that means I can't transfer money, I just can't use their card at an ATM.

ABA good bank
Cambodia Public Bank good

We use ACLEDA. IMO they have more "remote" locations in Cambodia - including the town my wife is from (and we lived for a while). When we first moved there it was actually the only bank in town with an ATM. Not sure if its still the case. We have had very few issues - their ATMS are usually in service (they have improved greatly in that area over the past 4-5 years from my observation).

I would disagree with previous poster that things happen fast at ACLEDA. I've often waited 20-30 minutes just to get to the window at their main Siem Reap branch. In the small towns very little wait.

From others that I know, I'd also say ABA is a solid bank. Can't speak to their ATM network or services offered but never heard of any major issues with the bank.

Good Luck.