Hi Nature88

,
that's so nice of you(know what to do during sch vacation and most importantly know what/how you'd spend your hard-earned$$$ wisely:thumbsup
Well, me too and have just added you too:cheers:
I believe you're a person who have the ability to weigh/balance between sch works and still have some free time for your photography
(take your time, step-by-step...yah...right?) =)
For me, I've been looking at Oly EP1 and (if ever...??) EP2??, since not much point to talk about the GF1 cos of the "you-know-I-know-things"...hahaha...the batt-thing lor...!!.
Yes, as for your case the 20D, EFS 18-135 IS (135mm x 1.6 =
216mm) is equipped with what I'd call it 'a-good-focal-range-lens' and in case if you need just that little bit 'wider-view', there's EFS15-85mm IS
but need to fork out more this-->$$$ leh:sweat: yet 85mm x 1.6 =
136mm...sigh...=)