Looking to pimp out my new DJ room in the garden. New speakers are required.

Given the choice, would you go for:

Studio monitors like these http://www.dolphinmusic.co.uk/product/37567-krk-rokit-powered-6-g2-pair.html

or really nice hi fi speakers like these http://www.whathifi.com/review/BandW-685/

I'll be doing a mixture of mixing and er, listening so not sure how to play it... any tips?

Cheers
DJ