Should I trade my iPhone 5s for a nexus 5?

If I sell my 5s on ebay I can get a nexus 5 and have $310 in profit. I'm not sure if its a good idea though because I love iMessage and like the idea of 64 bit processor but I hate how I can't download files off the internet and tweak the software. I also have an ipad too. I want a high performing smartphone.