A:Answer That's entirely up to you, but I got the Bluetooth only version of the Watch5 Pro and have no complaints. I also have my phone with me everywhere I go, so I use the watch to make and take phone calls and it works flawlessly. Technically, you can still make and receive calls through your Bluetooth variant watch if you have it connected to your Wi-Fi network that your phone is connected with.
Realistically, getting the LTE variant is not a big deal at $50 more. If you can afford the Bluetooth variant then the extra fiddy spot more for the LTE variant isn't of concern. I'd say get the LTE variant if you don't usually have your phone on you or you're not usually near a Wi-Fi network. If you are off the beaten path all the time and always out and about without your phone, nowhere near Wi-Fi, get the LTE variant so you can get connected almost anywhere you are.
The Bluetooth variant is what I picked and I (with regard to my specific situation and experience) personally don't see the need for the LTE variant. Some may want it, just to have it, it never hurts to have too many connectivity options/solutions!
But, with my cell always being on me and being connected to an unlimited data plan with plenty of high speed mobile hotspot data, I'm content with the Bluetooth variant Watch5 Pro. This variant does everything I need from it, when I need it to, without requiring the LTE variant. Hope this helps.