From my experience, the low end groups aren’t all that, but the higher end stuff is lovely.
Got Chorus carbon 11 speed on my posh bike and its spot on and pretty 🙂
CX bike has Centaur 10 speed chainset (ultra torque) and cheap mirage shifters and rear mech.
The new ergo lever hoods are much better than the previous ones which i find a bit too small.
Had a play with some SRAM double tap levers on a mates bike and quite liked them, but not really a fan of the shimano 2 lever set up however smooth the changing might be.
“So is the little lever on the site of the shifter accessible from the drops?”
As long as you dont have your levers set too high then yes.
Ideal for banging down multiple gears when sprinting/coming out of corners on the drops.
Note, this only works on the higher end kit as low end stuff only allows one gear at a time with the thumb shifter (like cheap shimano).