be?st choices for new engine for P210?

(Sorry if versions of this message show up twice. Right now it looks
like my first attempt vanished.)

The engine on my 1980 P210 has reached TBO, and I'm trying to figure
out the best course for replacing it. Cessna experts who I trust in
Santa Maria, CA have suggested a new Continental engine (this is a
TSIO 520P) for around $37K. Another option would be a factory reman.
by Continental for around $31K. I've also spoken with Western Skyways
about a Millenium engine for around $29K.

What's a good move here? I've looked at some old threads on this
newsgroup, and some of you have given good advice. But I'm confused
because there have been different problems at different times (e.g.,
with new Continental engines at certain times and with Superior Air
Parts Millenium cylinders at other times). Are Millenium or ECI
cylinders really better? Are there advantages to a factory new
engine? etc.

I guess my priorities are 1) getting a reliable engine; 2) avoiding an
early top overhaul; 3) working with a company that upholds their
warranty without problems; and 4) getting a decent price.

Any advice on any aspect of the above would be most appreciated! Feel
free to post or email me )personally.

Thanks!

--Phil Kellman