IPhone 4 still worth getting?

I'm a college student and I'm going to be able to afford a new phone soon. I have always wanted an iPhone, but i've never been able to afford one ( and really still can't). The only phone that i can afford is the iPhone 4 with StraightTalk. (With StraightTalk, you pay for the phone monthly, but there's no contract.) in 2014, is the IPhone 4 still worth getting.
I've also been thinking about getting the slightly more expensive Samsung Galaxy S3

Added (1). The price of the iPhone 4 is $305, while the S3 is $355

From my perspective, no its not worth getting it in 2014. I would recommend getting the S3 as it is the competitor of the iPhone 4S and not iPhone 4. Even though it is able to be upgraded to ios7 I don't think it will run well as the ios7 was specially designed for iPhone5 and above. However, if you are an Apple fan and always wanted an iPhone then go for it, if else you will regret as the S3 isn't really what you wanted and the only reason you got it was cause it was more value for money.

Rather than a new iPhone 4, why not search for a used 4s? Check craigslist, and you may be pleasantly surprised at the cost of a slightly used phone. The 4s is the lowest level phone that will run Siri, and once you've used it, you will be glad you have it. In my area, a used 4s sells for about $200.