What are your thoughts about moving up product line(s) within a Company?

I like co.s that have been in business a long time and have good customer support.

e.g. Magneplanar, Vandersteen, Bryston, Audio Research and many others

I've had very nice components where the small, innovative co. was wiped out and then had trouble getting them repaired.

A vision pursued over decades, honing the SQ every several years counts too (see above)