Wireless remote for D800

Dear all,

Is there a wireless remote that you recommend for D800? The remote has to be able to work in the bulb mode. Additionally, it starts the exposure with a button press and ends on another button press, i.e., I do not have to hold any button down while exposing.

I would be nice to have an integrated GPS as well.

Let me know the one(s) you tried and how you like.

Thanks!