OK I know I've asked this before but I need one last opinion before I spend all my money so here's the question.

I blew the speaker in my amp a while ago and I need a new one. I found speakers but they were all wired at 4 or 8 OHMs and my amp is wired at 6 OHMs. I asked here if getting a 8 OHM speaker would be asking for trouble. I kind of didn't get a very clear answer. I asked a guy that I jam with on occasion about it and he said since it's in between I could go with 8 or 4 OHMs and just lose a little bit of power. What is your advice?