Go for whichever you think you will be happiest with, I doubt you will feel like you made a bad choice if you go for either of them.
Ignore the people who tell you to avoid Boardman 'coz it's Halfords', but on the other hand don't think you are being silly if you want to buy a bike with a lower spec because you like it more.
I have a Boardman Team Alu. For what it's worth it has a good spec and is very light for the price too. You will need to be able to set-up a bike yourself though, just in case the Halfords staff have been crap. IMO they tend to have a fairly agressive geometry, i.e. the handlebars are quite low, but that might be because I am on the upper size limit for the frame.
FWIW I think the Carbon Team looks pretty cool. It is supposed to be a stiff, racy frame though as opposed to a comfortable, flexible frame.