New or reman engine for P210?

Well, the trustworthy engine (TSIO-520P) in my P210 has put in its
1500 hours or so without complaint, and it is time for a new engine.

The choice is a new or factory remanufactured engine. My trusted
Cessna sources in Santa Maria, CA favor a new Continental engine (at
about $37,000), but they are not particularly negative about a reman
from Continental (about $31,000). I've also talked to Western Skyways
about a reman. with the Millenium engine (very roughly $29,000). I've
heard good things about ECI cylinders but haven't looked into
specifics.

I've tried to look at old newsgroup threads on this, and some of you
have posted excellent information. But I am confused about whether
Millenium or ECI cylinders would really be an improvement over new
Continental ones. In some time periods, Continental has had problems
(although I hear good recent reports) and Superior Air Parts
(Millenium) has also gone through problems.

My number one goal is to have a reliable engine and avoid an early top
overhaul. Second, if a problem develops, I'd like to be working with a
company that honors their warranty to the utmost. Third, I would like
to think I am getting a decent price.

Any and all advice about any of these issues would be greatly
appreciated.

Thanks,

Phil Kellman