Which one is better : Roth IRA or Traditional IRA ? Looks like traditional IRA contribution is tax deductible and you only pay taxes once you start taking out money. While, Roth IRA you pay the tax or something like that but you don't get tax credit. In some you tube video this guy was like if you don't make a lot invest in Roth IRA since you will not pay lot of taxes.

Anon bro, You are correct that you will be taxed when doing the conversion. But what if your income is too low and the amount you convert is such that, your total tax liability is basically zero? You pay the tax but it is zero, so basically, you pay nothing. Of course, this is not for everyone, but it can work wonders for an early retiree.

Word of Caution: Things like this can be complicated and a misstep may cost you a fortune. So always take professional help.

Here is a link that explains how it can be done. http://www.mymoneydesign.com/personal-finance-2/retirement/backdoor-roth-ira-conversion/

Thank you all in engaging in this topic. This should help me and others in the future.

Traditional.
(if you were to be rich rich, then you have to not mind paying the taxes. Else, traditional beats Roth)