Ah 1977 audio gear. I also chose the EPI 100's with the ferro-fluid tweeters for my first speakers. Compared to the paper cone tweeters the epi's blew them away. Well made speakers for sure.

As far as upgrading I would go up to the M22's to really beat the EPI's by a good margin. I have the 22's. They really are as accurate and detailed as everybody says.

M22's VP150 QS8's Onkyo TX503 Yamaha YST215 (sub)