Would you reclass for an MOS you would enjoy, or one that would set you up for civilian life ?

Hopefully you can find an MOS that combines those two characteristics. They aren't necessarily mutually exclusive.

SSG (Join to see) There is no perfect answer, it depends on you, your goals, plans, and some luck.
If you stay in, work hard get promoted through the ranks, regardless of MOS, you will achieve experience, and skill that translates to the civilian job market if you choose.
That said, many, most, ok.. a lot of employers give no credit for military service unless its a specific certificate or skill set that directly translates over. So medical, Signal to some degree, IT, heck even fuel handlers and mechanics, truck drivers and such.
I would have happily changed MOS to MP for a chance at being a dog handler when I was a SSG, getting down with DS duty knowing it was a very limiting position for rising in rank and positions of authority....It did not work out so back to the Infantry went, for another 16 years.
Im not at all unhappy with my service in the Infantry, the opportunities to do the things I did, positions I was entrusted with, people I met.......But Id have traded it to be a k9 Handler at the time.

Now I get to work with dogs almost every day, so not all is lost, and with some luck and work, perhaps be a handler in my current employment pastime.

Do the fun stuff while you can. You've got the rest of your life to just work. Your fuse is burning and some day you'll be old and weak like me, lol.

Do something you enjoy. No matter what MOS you pick you’ll require additional training, education and certification to be competitive in the civilian workforce once you separate. You’ll be better off doing a job you enjoy and retiring at 20 years than doing an MOS you don’t love so that you can do more of the same as a civilian

There are two schools of thought: do something similar to your civilian career because you bring experience from and to both (this includes taking a military job that can open a civilian door for you).
The other is do something in the military that you love doing, that only the military can offer.
Here is two cents: I was an option A and B guy. I have loved my law enforcement career, and the Marines literally allowed that door to open (twice). Most (as stated by others) civilian employment could care little for what you learned-until they see it in action. Some things have to be experienced in life, not a textbook. Military is full of those experiences.
That said: there is no right answer, but you have to pick something that really interests you-as you will sacrifice a lot of your life to do that Reserve Duty. Make it something you care about-not just a job.. Then time will fly.

Kind of a hard question SSG (Join to see), I came into Active as a 91D that's the job I wanted because that's what my father did in the Air Force. Didn't really do that job, until I got to WHCA. Then wanted something that I could use out the outside as well in the Reserves, bam 25B. Well to get picked up for E6 either had to go to JBLM or reclass. That was an easy decision I reclassed to 88N. After having traveled so much with WHCA I wanted to have nothing to do with traveling. So, it really boils down to what you want to do. At least in the signal world you can get your A+/Security+ etc... and set you up on the outside. I wish I had a better answer for you. I wish you the best in whatever decision you make.

If it helps my options are 89D or 17C. Or go back to SFAS

Trying to win a golden goose is defeating the purpose of serving the nation (my opinion). An MOS that you enjoy and love doing would be better in my mind