Weatherby,
The difference in power between the two will amount to a VERY negligible difference in maximum volume output. As Fred said, choose one over the other almost entirely for the feature/price combination, do not get hung up on power ratings.
If you do have a very large room and intend to listen at very loud levels, you'd probably want to buy separate dedicated amplification anyway, you would not want to upgrade to the 3808 solely for the minimal increase in power. If the 2808 has the features you want, I'd take advantage of the deal.
By the way, congrats on your purchase!
Jason
