thanks natek. I appreciate you replying. At the moment I am using the Super Macro setting on my Canon PowerSHot Pro1 (you can't buy it anymore) and it takes fantastic photos which I have always been really happy with (as well as it being a good all round camera). Though I was just reading the booklet that says on Super Macro the photos are only 5MP - I must say I haven't had any of them blown up big size yet.
So really if I want to get really serious about this (which I do) I should go for it and buy the 100mm? (in your opinion?)
Thanks.