I just got a 2018 SL5. I had my eye set on the Emonda ALR5 Disc but after test riding an Emonda I knew it wasn’t for me.
The shop had this 2018 SL5 and I LOVE it. I thought I needed disc brakes and I would say I am not the best descender, but I feel comfortable with the 105 brakes
The bike is stable and smooth and well builds confidence when riding. My previous bike was a 1991 Trek 1200, a good bike for when it was made, but this Domane is light years ahead.
You will enjoy your Domane.
One thing though, budget for a saddle. The stock saddle was horrid for me.