I've used too many to dare say Plantronics bluetooth for mobile sucks.. I've owned at least 4 models of Plantronics. Everytime, it just fails me. And this is over many years with different brands and models of phones. Either too soft, connection sucks or the other party can't hear.. I just think it over hyped, over marketed product..
I believe they are good at what they do in terms of models for desk phone.. mobile headset wise, stay clear.
So far Jabra and SE hardly fails.. SE DSP is great. Infact I think is better then jawbone's noise assassin. Jabra is more of a safe brand.. no the best, not lousy either.. their noise cancelling nothing to brag about.
Jawbone is a hit and miss.. Older models are better. Jawbone and Jawbone Prime are great. Era so so only. What marketed is the feature. I was told noise canceling for Icon is better then Era's..
Blueant have great BT connection to mobile phones. Hardly fails. Noise cancelling also older models are better.. Fit is mostly horrible though..
If you don't mind the cable, Jaybird Bluebud X is great. Battery life is fantastic.. Don't get the Freedom or Freedom Sprint though.. disconnects from phones (Samsung and Motorola) so often, you really need to stay really still to use it..