I own both an 18 Diverge and a 19 Roubaix. I bought a 2018 Diverge Comp E5 for $1600 in March of last year and have really enjoyed it. I ride it nearly every day to commute and did/do weekend rides (even did a century on it in Sept.) It's super comfortable and can be ridden quickly easily. I did upgrade the cranks from the Praxis Alba to Shimano 105 to get the groupset up to full 105. ( I broke a few teeth off the big ring and an upgrade to 105 was suggested by my mechanic) I also picked up some beefier wheels (ditched the Axis stockers for some beefy DT Swiss 500db's. I would love it to have hydro discs but to be honest the cable operated disc units have worked well.

And to the poster earlier that said only Specialized fenders work on the bike is mistaken. I did use those at first and they were awful. They broke at the mounting points twice before I bit the bullet for Portland Design Works fenders and haven't looked back.

I bought a 2019 Roubaix Comp Ultegra Di2 equipped bike a couple of weeks ago for $3700 and have really enjoyed it as well. It's several lbs lighter and being carbon is much stiffer. It rides like a dream and is a bit faster/more nimble than the Diverge. Lots of new PR's on my routes with the Roubaix and even a KOM that I've been chasing for awhile on the Diverge.

Hope this helps.