When I purchase, I look at overall numbers and NOI/ROI. So if taxes are high, that gets factored in, and purchase price would have to be lower to compensate.
Where I am, taxes are low (~800/yr on a 3 bedroom) but many places have HOAs, so that has to be factored in.
It's all about the bottom line, wherever the expenses are coming from (taxes, HOA, more repairs due to an older property, etc.)