I'm planning to develop a top site in the food sector. I would like a site that combines localized restaurant reviews with recipe sharing and networking of people with similar tastes. So far I like the social networking of boonex.com , the ranking of meeplace.com and the cms vivvo.net.

So the question is, what would be the best way to approach developing this? Customize boonex to be like meeplace/vivvo? Or customize vivvo to be like boonex/meeplace? etc.. Another possibility, buy all 3 and try to link the user dbase...?

Any help or suggestions is greatly appreciated. I have a healthy budget for this, so I'm looking for the best solution, not the cheapest one.

Thanks!