Is it sensible to consider upgradeing from 4-STABLE to 5-STABLE?

[stan]

I'e got about 25 production machines with varous versions of 4-STABEL. Once
I've gotten to a comfort level with 5-STABLE, is it a sensible idea to
consider upgrading, rather that reinstalling these machines?

If so, can anyone point me to some docs as to the asfest way to do this?

-- 
"They that would give up essential liberty for temporary safety deserve
neither liberty nor safety."
						-- Benjamin Franklin