best activity tracker?

[Hitman_UK]

Hi I'm looking for an activity tracker, I have a Hawuei W1 but I wanted a watch where you don't need to carry the phone, it doesn't pick up my running route as no GPRS? i might be wrong.

I was looking at a fitbit or an apple watch with the 4g but they needs like a big investment.

I noticed some trackers are not even accurate what do you recommend?

 

[Hitman_UK]

My main concern is how it actually tracks it and is it accurate for example I rode 1 hour 30 minutes yesterday it come up with 453 calories burnt (average speed 12.4mph the ride included a lot of hill riding it wasn't an easy ride, I get the impression I would have burnt more than that, maybe not, yet once I use a calculator for my weight it says I burnt around 800-1000 calories for the same exercise, I finally managed to get my phone linked up again and it said I burnt 597 calories for 55 minutes of running, however part of the run I ran up 750 steps, I wonder if it actually reckonising this and notice my heart rate will be higher etc..