I liked the magnapacks sound alot better than the new glass packs.There 4" round body mufflers sound more refined while still doing an ok job of cancelling noise.
http://www.summitracing.com/parts/MPE-10416/?rtype=10
They made the product to compete with the other cheap glass pack companies...basically make a better product for the same price.
I have standard true dual glass packs on my truck now and I can't wait to ditch them for a full magnaflow header back.