Alpha or I5? That is the question!

[solarflare]

I've heard a lot of people rav over the I5 engine, but I have heard a lot of good over the V8. I bought a H3T with the I5. Seems to go really well, but I also own my 08 H2....lots of power.
I was almost thinking that I should of bought an Alpha H3T......Is there anyway to get rid of the lawnmower sounding I5? I think it's the sound it makes that bugs me the most.....it has plenty of power. I don't want to go overboard and redo a whole exhaust system....so I would like your opinions!