Just my $0.02, I'm on my fourth exhaust arrangement (counting stock):
You can typically tame an after market flowmaster, magnaflow, etc.. with glass packs, but our short body can make it a challenge to fit those inserts in - especially if you go duals. It was a squeeze to get mine in.
I find that the short body and the openess of the rear cab makes for a loud ride if you go anything above stock noise levels. It'll be a challenge to try to find a balance between stock and something with bark that you'll like off the hop. The bark is cool, but probably like you I find it can wear off and be annoying or bothersome. I sometimes enjoy getting into other cars and feel the silence.
If your concerned with noise - go beefy and talk with a reputable muffler shop - I ler-ned alot from doze guys, more than from google...
Also, on a 4,000 lb car - the stock muffler mass (~1% ?) is nothing when you factor in a full tank of gas, or bigger rims or roof basket, etc... Maybe the stock muffler helps lower our center of gravity on the trails...;P
Again, just my $0.02 - good luck. Let us know how you make out.
cheers.