What SLR should I buy?

My friend asked me what would be a good SLR buy. Here is my quick review

I own Nikon 40D
and 18-55 and 55-200 and 50mm lenses.
I wish I had 18-300mm lens because most of our daily life nice photography can have good effects with it.


Before buying remember these
- SLR is bulky - so buy least size possible
- changing lenses to take nice shot - really tough - you will slowly adjust to use same lens
- so buy a camera where one lens can do most job
- Lenses are the key to the model you want to buy
- Real Canon/Nikon lenses can be expensive...there are other companies which provide lenses for Canon/Nikon camera..check them out too
- I prefer to buy SLR which has an affordable lens in range of 18-300 aperture
- Ex: Sigma 28-300 (one lens can help you take any kind of pic) 445$ or so http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3305&navigator=2


Best cameras
- Nikon 60D (Read reviews at http://www.kenrockwell.com/nikon/index.htm)
- Canon Rebel XTI (reviews at http://www.dpreview.com/)


bottom line...do bit of research..my knowledge is based on technology of 4 yrs old...things have changed..prices have changed...