To Upgrade or Not?

Greetings Thou Most Enlightened Mid-Rangers and Illuminators of the
eServer/iSeries/Uh... whatever, path.

    I am @ V4R3 at present,  which seems to have all the blessed favors from
IBM which I have wit to engage.  Should I Upgrade to V4R5?  If so Why?  And
supposing I should, what exciting adventures am I likely to encounter in the
process?  What quits working?

    What do you, see as a significant improvement in upgrading?  Is 4.5
slower/faster?  Does it require more resources?  Are any
functions/capabilities significantly enhanced?  I am attempting to code in
RpgIV/C ILE with just a tad of Sql, which remains largely an unexplored,
dark and dangerous territory, and making heavy use of APIs, mostly for a
5250 audience both wired and wireless, at present.  How can an upgrade
further my insignificant, fumbling efforts?

    Running a 620-2175 with I believe, software subscription.

    I would be most thankful for any bits of wisdom which you might wish to
reveal.

Regards from the outer edges

Ricardo

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