If you are happy with the specs and won't want any more for a year or so, then P2V+ does it all out of the box with minimum fuss. If you think you might want something with a bit of future expansion room then look closely at the P2... it's not as ready to go out of the box with the FPV side of things, but you are able to pick and choose your own video monitor and video transmitter and going forward if you decide to change aircraft you can carry all those forward to a new one. The Vision or Vision+ are designed to be an "end product" and there's nothing to carry forward for those guys.
If you don't already own a GoPro and you're happy that the P2V+ is going to give you what you want video and still quality-wise then I'd lean towards that... But it's got a to be a decision you're happy with! Pros and cons to both. Good luck.