Need some help choosing between some bikes please!

I am going to be commuting 8 miles on London roads each way daily and I am trying to choose between 3 bikes.
http://www.evanscycles.com/products/pin ... e-ec044185
http://www.evanscycles.com/products/spe ... e-ec030741
http://www.evanscycles.com/products/rid ... e-ec043410
I have seen the Ridgeback Element on another website for £370, which brings it (just) in to my price range.
I do not know a lot about bikes so I am having a hard time deciphering which of these would be the best for my needs. Any help would be massively appreciated!
http://www.evanscycles.com/products/pin ... e-ec044185
http://www.evanscycles.com/products/spe ... e-ec030741
http://www.evanscycles.com/products/rid ... e-ec043410
I have seen the Ridgeback Element on another website for £370, which brings it (just) in to my price range.
I do not know a lot about bikes so I am having a hard time deciphering which of these would be the best for my needs. Any help would be massively appreciated!
0
Posts
The Ridgeback is from an online only retailer so I would have to assemble the bike myself whereas the others would be assembled and set up in store. Should this be a major factor in my decision?
I commuted 11 miles each way on a Sirrus last december when the roads became too muddy for my road bike ... fine - although I missed the drop bars - so got a CX as a second bike and my wife had her Sirrus back (it was too small for me anyway)
If you ask in commuting general with a better location someone may be able to recommend a good LBS ...