Sony 55" (1080i rear projection) vs. new Sammy 58" PN58A (plasma)

[nicholas01]

I bought my Sony KDF-E55 (1080i slim rear projection) back in 2005 or 2006 and I am wondering if it would be worth it to upgrade to the new Samsung 58" plasma (roughly $3,000)?

My Sony is a 1080i rear projection 55", but I need to know if the Sammy plasma will produce that much of a better picture to justify the $3,000 cost.

Thanks for the help!!