Please Help me choose a bike :)
 

Hi, so it has been a long time since I have owned a bicycle but have recently decided to look into purchasing one mainly for fitness and commuting. In my searches on the internet as well as looking in a few bike stores a few models have jumped out at me. Kona PHD, Specialized Sirrus, Cannondale Bad Boy and Rocky Mountain RC line. I will be commuting maximum 20km a day. Does anyone have any experience with any of these bikes good or bad?? Thanks :)

Hmmm, the Kona PHD is of similar componentry spec to my 2010 Jake the Snake, which is a fine ride imo

All good rides, take them all for a test ride. Buy the one you like the best. That way you'll actually ride it.

Hey ya I started looking into Cyclocross bikes aswell. Do you find it is a good fit as a commuter??

My only comment is that the Bad Boy is the odd one out in that group you mentioned. It has a heavier duty frame + disc brakes and is more of a mountain bike meets commuter hybrid, whereas the other 3 are more of a flat bar road bike.

Some CX bikes make better commuters than others generally, but yeah, if you are looking for an all-rounder, then a CX isn't a bad way to go.