I had the 3802 running M-80's for some time before I purchased a 5800 and now subsequently the 5803. The 3802 never had any problems with the 80's. The unit is rated for 6-8 ohm loads and can do so with no trouble, to say that 6 ohm is pushing it is not really a accurate statement to make. If you are that concerned about it then why not go for a better receiver? Move up to one of the higher models where you know you will be safe running the load. If budget is the concern then yes you have to make some sacrifice but really I would not be to worried about the 3803 if it is anywhere near as good as the 3802 (and by all accounts it is better then the 3802) then you will be fine.