If you like idiosyncrasies in languages (as Perl does) then R is the way to go (it even has not one but at least two oo-system), which is to say R is the more difficult language (ok - nothing could be simpler than Python evidently).

And R has some really powerful packages (I like eg. ggplot2).

But at the end of the day R is a language for statistics, so it depends on how much you know about that.

If you know what a linear model is then R is clearly the "better value" as there are a lot more people that claim to know Python then then there are R-specialists.

But if you don't have the maths then R is kind of pointless....

So the summary answer is: It depends. On your math skills mainly.