Welcome aboard.
Well hell, I am probably not the right person to answer your question but I'll give you my input anyway.

While it is true that Weber's quality has tappered off over the past few years, Weber still has a 10 year warranty. I've owned my EP-330 for 6-7 years now and have not had any problems. I haven't even had to change the ignitor battery yet!
Now, the brands you mentioned, they have more cooking real estate and maybe capable of producing 70,000+ BTUs, six burners, and have all the bells and whistles at a cheaper price.
But, a Weber will beat them hands down with nice and even heat distribution in the grill.
And here something to know about glass viewing windows in grills and smokers.
As any owner of a smoker with a door window will tell you, the novelty wears off after the third cook. Keeping that glass clean for subsequent cooks is a real PITA.
It really boils down to how many times a week you are going to use the grill and
how you are going to use the grill. If you think you're going toss in a smoker box loaded with wood chips and do low and slow barbecuing, then guess again. It isn't impossible to do, but it does have challenges that most people aren't willing to deal with.
For safety reasons, newer gassers are designed for excessive air flow which is what creates those challenges.
That is a Weber Silver B in my avatar.
Through the 14 years that I owned that grill, I beat it like a rented mule.
What finally did it in was the left side support frame rusted out because I always left the grill out in the elements uncovered all of those years which was totally my fault.
But dang, that grill could do low and slow due to it's shallow firebox and slender rear vent that created the perfect air draw from front to back.
I also have a Weber Genesis 1000 that belonged to my father. It sits unused but covered.
So, you could get a $600 grill and replace it every 5 to 6 years.
Or you could buy a Weber for $1,000 or so and have it last 20 years or more when cared for properly.
Here is a thought. Check your local Craigslist for used Webers. This way, you're letting someone else pay the initiation fee. Just be sure to check them out in person and have the seller fire it up for you.
TL;DR version:
Buy a Weber. You'll be glad you did.
Final edit: I am trying to convince my wife that I absolutely now need a Weber 22 Performer.