I was looking for a copy of Creedence Clearwater Revival's Cosmo's Factory. Found a 180gm copy on sale for £11.99. But there's a half-speed remastered version at twice the price coming out soon. Having never heard a half-speed remastered album I'm wondering if it's worth the wait, and the money. Aside from this particular album, are half-speed remasters appreciably better sounding?