I dig the bass heads, only because of the muffling system but, I've used the snare and tenor heads for the past 4 years of my life and I hate them. They're more durable, but they sound like pillow on tenors. The only thing worth a lick on tenors are the MXFrost, but those aren't even that great, the coating comes off quickly, and they're far less durable than the rest of the Evans line.
I am a strong, biased user of Vic, Pearl, Remo and Zildjian. There is no other choice for a truly professional sound.