BODYMEDIA FIT- last few lb to lose

Hi
Please could I have views of ppl who have this device. I'm on my last stubborn
10lb eating 1200 cals a day and obviously there is much debate how many calories we should be eating however my question is realistically it will
Tell me to eat more (i had one previously) with
A 500 cal defecit, do I trust this guidance or persevere with mfp diet?
With not much left to lose is this the answer or too risky?
Thank you