a great place to look is here http://photography-on-the.net/forum/forumdisplay.php?f=107&order=desc , seeing results is always a great decider
a great lens for the price is this http://www.canon.co.uk/For_Home/Product_Finder/Cameras/EF_Lenses/Zoom_Lenses/EF-S_55-250mm_f_4-5_6_IS/ but that would not be as wide angle as the ones you listed yourself
i have the 28/135 you listed above and it is a good lens, just not as good as their L series which are seriously expensive
here are a couple of shots taken with it on a 400d
england 044 by corny7, on Flickr
england 051 by corny7, on Flickr