Six years? How much did you run that thing? I've been running a Lyman vibrator for over 20 years and I think it's just now starting to make more noise than usual.
I have been thinking of replacing it with a Dillon 500, in part because the one I listened to in a store recently was practically silent compared to my old Lyman. But if they only last 6 years I'd be inclined to put up with the noise and get another (cheaper) Lyman, or perhaps the even cheaper Frankford Arsenal (Midway's product brand.)