Looking for Heart rate monitor

bestrodeo

I am looking for some recommendations on different heart rate monitors.. Im actually looking at buying on in the next couple of days but not really sure what to buy..

I would like one that tells me:
how many calories I burn during my actives
how far a walk/run
how long ive been active
my pace
fat calories (if possible)

I saw a post within the last day or so about one that even provides info while you sleep (sounds awesome)

So if anyone can tell me what they use, how they like it and so on I would appreciate it..