Forget Ras Al K. You can still make decent money in Dubai and if you hang onto the property long term you cant lose.
Do your research and get to know the developments in Dubai.Spend hours on www
skyscrapercity.dot.com and not only will you learn loads but the forum has loads of posts by actual investors and their experiences of buying into various projects.Its priceless.Remember agents will be more interested in selling you something that is good for them and not for you.Go for a known developer.Tameer,Deeya,Damac,Dubai properties to name a few.Areas to look at are Jumeriah Village and Silicon Oasis.Sports city should be looked at too.I'm assuming your buying offplan?This is how you will make the most from capital appreciation.Normally you will put 10% down then around 10% every 3 months.Do your research and make sure you know Dubai before you get anything.