Owlet baby monitor worth the hype!?

Bridget • Wifey/Boymom x 2/Nurse
Hi ladies! I am expecting my first baby in June and am looking into getting the Owlet baby monitor and/or a breathable crib mattress. I was thinking that the Owlet monitor would be better, being that they can wear it anytime.....and anyway, I plan to have my baby in a bassinet beside my bed for the 1st few months since I will be breastfeeding. 
Have any of you ladies used the Owlet monitor? I can't find many reviews online. I was wondering the helpfulness and accuracy. If not the Owlet, what other brands/models have y'all used and were impressed with?