Is Telestream Episode any better than Compressor for MPEG-2?

My workflow is HDV tapes to ProRes timeline to ProRes SCQT. Then Compressor to
encode MPEG-2 for SD DVD. Sometimes I deliver for the web but not often. I am wondering
if anyone is using the Telestream products (Episode or Episode Pro) to encode to SD DVD,
and what the results are compared to Compressor.

Compressor has always worked fine with the settings I've developed mostly by reading
this forum, however when I try to put more than 4hrs. on a DVD the quality suffers.
And of course the time it takes to encode is lengthy to say the least.
Just asking if anyone has used both and if they have praises or complaints for the
telestream products.

Also I need RAM for the new Mac Pro 2.8, 8-core I'm getting, any suggestions would
be great. Thanks in advance.

EArl W.

Mac Pro 3.0, 8-core
6GB RAM
X-SAN