My Canon EOS 7D with 28-135mm zoom lens It works as a great pair. But I travel quite often, the wide angel part I missed was inconvenience to me. So I bought a Sigma 18-250mm f/3.5-6.3 DC OS HSM IF Lens for Canon and put these two lens side by side to make a comparison.

 
     
As you can see, these two lenses are similar in length, though Canons 28-135mm is much more handsome. I also used both lens took test shots on a tripod, the results are almost identical, I couldn't tell which one is better or worse.
 
To the end, I sold this 28-135mm online for a good price, and kept Sigma. So far, I am very satisfied with it's performance.

                 
I am upgraded! Canon EOS 7D with 28-135mm zoom lens! How exciting, this is my first semi-pro camera.
 
The reasons I chose this camera:
 
1. an affordable price tag for a latest semi-pro camera.
 
2. extremely low noise at high ISO even at 6400 ISO setting (you better to use DPP (Digital Photo Professional, comes with the camera to convert from raw, high ISO files in PS has a lot more noises).
 
3. fast and accurate 19 points auto focus.
 
4. automatic ISO
 
5. holding the 7D is so much more comfortable compared to other models I had tried on in stores.
 
6. weather sealed body.
 
Con: You may need to upgrade your computer to handle huge files that 7D produces. (at least 5GB RAM).
 
Test Images (without any editing, came straight out of 7D):

   Canon 7D with Canon 100mm macro lens (plus B+W 58mm UV filter and lens hood)

   hand-held, natural light, single AF point focus, 1/160 sec., manual ISO 400, F2.8,
 

This photo and the ones below all took by Canon 7D plus 28-135mm lens (plus B+W 72 mm UV filter and lens hood )

hand-held, natural light, 19 Point Auto Focus, automatic ISO 1000, 1/80 sec.,F8.
 

hand-held, late night, only light sauce was from this lamp, single AF point focus, automatic ISO 6400, 1/80 sec., F5.6.
 

hand-held, a cloudy day, natural light, 19 Point Auto Focus, automatic ISO 200, 1/60 sec., F8.
 
Over all, I gave this camera a 5-star rating. It is a treasure box, full of wonderful surprises!

                    
Strawberry are in season. We bought 5 lbs of sweet and fresh local strawberries. And took some of them made a big pot of rich and delicious strawberry ice cream.
 
                      
Used this Cuisinart 1-1/2-Quart Automatic Ice Cream Makers ... works great, have perfect results every time. (make sure to use real sugar in your recipes to prevent ice crystal formation).