Rolex Daydona in White gold with black bezel = $20K ---> Seiko Kinetic Perpetual = $300 - $500 depending on model.
Both watches keep time just as well as any other watch out there. Both watches will do the job their intended to do. Both watches will look good doing said job.
It all comes down to personal preference. Some people will go for the Rolex, some will go for the Seiko. Either choice is right because it only matters to the one making said choice.
As far as RBAs goes... I have a handful of IGO-Ls (use them for flavor testing and when I know I'm going somewhere where the risk of losing a mod/atty is high) and I also have a high end atty (Doodlebug SE) with a second one (Nahual) on the way.
Do the expensive ones vape better than the IGOs? Yes and No. It all depends on what juice/flavor I'm in the mood for.... The coil, the wick, etc.
I run micro coils at about 0.8Ω and cotton wick on my IGOs. The air holes are drilled out to 1/16" (1.58mm) diameter. Vapor production is incredible, flavor is great, throat hit is right where I like it.
My Doodlebug is set up with a 0.8Ω coil around SS mesh. The airhole on the Bug is 1mm diameter. Vapor production, flavor and TH are also incredible on this one... Again; it all depends on your setup, juice, etc. I have managed to make my high end atty produce crap-tastic tasting vapor before... And I've also managed to take a mouthful of burnt cotton from the IGOs.
My drippers; I use for certain juices that are a bit too strong to keep in the Bug. Not that the would damage it or anything, but the Bug is my "All day vape" and that is always Grumpy's Hooch. The other flavors I run on the IGOs because I can switch around as often as I want and be "cleaned, coiled and wicked" in five minutes flat.
Having said all that; I prefer the look/feel of the high end stuff... Nothing wrong with the cheap RBAs/RDAs... I still love my IGOs and plan on getting a couple IGO-Ws to play with dual coils, but I'm also on the hunt for a few high end drippers.
One thing I can't/won't go for is clones, but that's a conversation for an entirely different thread.