The price of the J5 is competitive, and it does what a mid-range smartphone ought to do, without any nasty surprises, making it a safe choice.
One of its best features is its slim, elegant design, and if you've used a Samsung Android phone before you'll feel immediately at home. The screen is a good size and is of good quality.
The camera takes decent pictures, and the processor is up to the job. The one thing that bothers us is the 8GB of storage, but you can extend this at low cost with a memory card.