Welcome to WebmasterWorld Guest from 220.127.116.11
I have a very old site with very nice PR and nice ranking.
I consider moving it to a different hosting service, would that be wise as far as SEO is concerned?
As far as I know, what's really crucial is to keep the site with the same domain-name registrar.
I'd love you hear your thoughts about it!
From experience I would say yes. But perhaps check the new IP range you'll get against spam lists... as this may cause some problems.
I have personally moved a highly ranking site from host to host and even from registrars with no effect. However this was just over 1 year ago.