I've used Boomers for over 10 years on my guitars. Good value for money, long-lasting and nice tone. Started with 6-string, moved to 7-string and now own my first 8-string (HB R-458MN). I've tried a D'addario set and still like Boomers better. Have a great low end on 8-string. There is slight muddiness, but I'll put that on the pickups as I've had wonderful low end with Dimarzio-pickups (X2N, Air Norton, Tone Zone) and Boomers on seven-stringers. If you liked the feel and sound of Boomers on six or seven, you'll like them on 8.