Hi all,
Thanks for your welcome and thoughts!

@nvitalephotography: yes, I have been drooling over the 7D at our local camera shop. I love the build quality and most of all, the 19 AF points! But I am afraid a refurbished one is still too much money for me.

@Kombi: Yes, I know that there will always be a new camera as there are new Rebels coming out every year. I guess I will just have to jump when it feels right. I almost forgot that the price difference between the 650D and 60D is only 60 euro (Netherlands), so in total it would be more than the 60D. Do you know if and when a new camera is coming out?

@Sheiky: Portrait/landscape orientation ratio is about the same and I must say that I really love the battery grip on the 450D, but I think I could manage to live without if camera's grip feels good. At this moment, my pinky is just below the bottom of the camera and my index finger is a little bit cramped.
I usually like to shoot nice pictures during holiday, nature and portrait photography and sometimes family shots with a kid once in a while. Video function is nice and could come in handy, but for me certainly not the main reason I'd buy an DSLR

The main reason I like the 60D is grip size/build quality, but I like the specs of the 650D (DIGIC 5, image quality at high ISO). I don't really care much about the touchscreen. It's nice but no requirement for me. Was size the only reason for you to upgrade to the 50D? Are you happy with the decision? Do you miss your battery grip?