What are the advantages and disadvantages of using a PPA that's designed for your version of Ubuntu, versus using a "normal" package, but one designed for a different version of Ubuntu?
Background: We'll soon be installing Lucid Lynx, and Lucid's Ruby1.9.1 package is based on Ruby 1.9.1-376. There are PPAs that have Ruby 1.9.2 and are designed for Lucid. And later releases of Ubuntu have packages that are based on Ruby 1.9.2 (but the package is still called Ruby 1.9.1 for perfectly logical reasons). What factors should I consider in deciding whether to use a PPA, or a package designed for a different Ubuntu version?
(I'm not anticipating using RVM or installing from source, because we want admin to be as risk-free as possible)