Hybrid around £500

Hi

I'm looking to get a hybrid for work commutes, 15 mile round trip.
Want your advice and opinions on what is out there as I've seen the following and keen on the cannondale TBH but would prefer a 50/34 chainset as on the Boardman. Plus disc brakes and 28/32 tyres max.

http://www.tredz.co.uk/.Cannondale-Bad- ... _66047.htm

http://www.tredz.co.uk/.Ridgeback-Fligh ... _67831.htm

http://www.tredz.co.uk/.Eastway-FB4-0-2 ... _62943.htm

http://www.halfords.com/cycling/bikes/h ... -bike-2014

over the £500 mark but carbon forks
http://www.wiggle.co.uk/colnago-impact-claris-2014/

any thoughts on the above or any others?

thanks