I have had the Argon E119+ for about a year now. *Love it* and can't recommend it enough. Fast and highly adjustable as you'd expect at that price point, climbs very well and descends like a rocket. Relatively rare too which appeals to the gear junkie in me. The only mods I made to stock is replacing the cranks with slightly shorter Rotor inPower cranks and QXL Rings (done at LBS when originally ordered), and using an Xlab BTA system because it allows me to use a regular bottle on training rides.
The storage unit on the rear carrier is huge, not necessary for racing perhaps but very convenient on longer training rides. For a shorter race the rear system is easily converted to a dual only or even single bottle system rather than the dual bottle plus storage, but there is virtually no weight difference and supposedly the storage unit makes everything more aero (I'd still like to see some data on that). Bonus is that you can pop the storage unit off (presumably loaded with your tools and tubes), and bring it along race morning to pop back onto the bike - no need to leave your stuff in transition all night or reload storage in the morning.
The bike came with swappable top tube storage options, the larger enough for gels, salt, etc., and the smaller not a storage unit per se but creating a nice aero flow across the top tube.
There's a couple of photos in the Instagram link below in the signature line but you probably have the visuals memorized by now.
Two thumbs up.
Kiwami NA Racing Team