I wouldn't just look at the miles of car and let that decide. As a matter of fact, I never even look at that when I went to buy my two integras. What you need to remember is that Honda engines are possibly the easiest engines to work with because of all the options and parts that you can interchange between different models. Saying that, it WILL be very easy for you to rebuild the engine if need be, and at a low price.
The things I mainly look at when buying a car (honda/acura mostly) is if it has any leaks coz that can sometimes be a big pain in the a$$ to fix and sometimes costly if your only option is to change the block, so look for that. Then ask for maintenance reciepts, ask for any unusual noises like clattering in the engine bay, and most importantly ask about the history of the car, like accidents and such. If all that is to your liking then get it because that is a good price, and if theres something wrong with it later on, just fix it yourself.
I saw a good quote from a member in TI, "A good import isn't bought, it is buit."