How is iOS 11.2? I only have the one phone which I also use for work and from past experiences I learnt never to install beta versions of software on it.
You may steer clear if you have had bad experiences, but I, too, have just one device with me, my iPhone 7, and have been using it on betas only with huge success. Prior to this, I had my iPhone 5s on betas with equal success. There have been only two instances where betas have been deal-breakers for me.
First was when I had to restore to release version of iOS 6, when iOS 7 beta 1 was released.
There was one more instance where I had to go back to release version, that was probably when iOS 10 came out. The reason was that Outlook app was not compatible, and that being email, was critical enough for me to have to go back to iOS 9.
Besides these two instances, I have had no problems whatsoever with betas. So, I would suggest, you make a list of apps and see, with help from this forum, if all work correctly on the latest beta (11.2 beta 2) and then you may take a call to get on the beta bandwagon.
As for me, there is nothing to make me roll back to iOS 11.1.1 at all. Beta 2 of iOS 11.2 is working beautifully with all my apps working as expected. UI and UX is smooth and fluid, animations are fast. Battery has been the best ever. Really, love the 11.2 fork.