From what I've read it seems that the conscious is that the loss of low end on the 4.8is is less with the H-pipe. I already feel like the V8 takes too much throttle encouragement to get up and going...so the last thing I want to do is make it worse.

Don't think I'm terribly picky as far as tone on either...just want slighter louder (but not obnoxious).

Hoping to not do anything too drastic, permanent or costly. Thinking about swapping resonators first as a conservative first step. If it doesn't yield the results I have in mind then maybe try X-pipe (only because they are readily available prefabbed). Followed by H or muffler delete if still not happy.

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Current garage:
2006 X5 4.8is
2007 Lexus GS350
2011 Cadillac CTS-V Coupe