Got Canon EOS 1000D. Worth "upgrading" to 100D? Any drawbacks?

[King]

I saw Currys PC World stores are doing a promotion on this camera.  Looks nice and compact so is even lighter for telescopes and is 18MP (as opposed to the 1000D being 10MP).  I also noticed it has a touch-screen focus feature.  Yet to do some proper web-research on the camera though, like what screen resolutions it's capable of and such.  I gather my 1000D lenses and telescope nose-piece are compatible with it.

What I initially need to know is what any drawbacks there are changing to that camera, and whether it's enough of an upgrade to merit the purchase.  Would my telephoto lens be a bit heavy for such a compact camera?

Thanks!

[brantuk]

If you check out Astronomiser website they have a good comparison of all the popular Canon cameras and you should be able to evaluate your choice from there. Hth

http://www.astronomiser.co.uk/moddeddslrs.htm#100d

http://www.astronomiser.co.uk/helpcanon.htm