Personally, I'd wait. The new iPhones always bring better performance and new features, which you may not have if you buy the 6/6+ right now. Considering we only have about 1 and 1/2 months left until we see the next iPhone, it'd be better to wait it out and then decide whether to get the 6s or the 6. If you do decide to go for the 6/6+, the price will be $100 cheaper once the new iPhones are released.
Last year, I was using a "dumb phone" and was waiting for the iPhone 6. In July, I had enough for the 5s and I almost sprang and bought it, but I waited it out and bought the 6 instead. I don't regret waiting, and if you wait as well, I bet you'll have no regrets either.
