I really do hear great things about the sp700. I just am not a fan of the form factor. Too big. That's why I'm trying to decide between the jabra and the Samsung Gear Icon X. Good reviews and feature set in a more attractive form factor and size (for me).
The are not big, in pics they look huge, but in person not so much.
I own all 3 you speak of here so I can maybe help a little. I am gonna rate them for you 1 being best 3 being least best.
I am comparing the samsung iconx 2018, jabra 65t active, Sony sp700n. I'm leaving out the sony wf1000x and jabra elite sport they are the older models and I figure you want advice on the new stuff. Here we go!
Sound- 1=sony easily, 2=jabra close 2nd, 3=samsung
Controls- 1=samsung love touch controls, 2=jabra, 3=sony
Fit- they all fit equally well, comfortable and do not fall out.sony and samsung go deeper in ear.
App-these all have excellent apps that work very well. Samsung has a great coach, jabra has a nice eq, sony noise cancelling control in app is so good.
Battery life-1=jabra easily, 2=samsung, 3=sony
Build quality- 1=samsung good feeling plastic,
2= jabra and Sony use a cheap feeling plastics.
Connection strength- I have great connection with all three, but I think samsung might be a smidge better with samsung note 8.
Case- 1=samsung case is great it locks closed 2= I dont like either sonys nor jabra case. Sony case is cheap feeling lid could break, jabra's case top lid doesn't lock, if you drop the case the buds will go flying everywhere and its shape is very slippery in hand.
Charging time- 1=jabra fast charge usb-c, 2=samsung USB-C 3=sony regular USB
I own a few sets because I like something in all of them, so I constantly rotate them. Just like regular headphones you cant just have one.