Site Build It vs Wealthy Affiliate: My ongoing dilemma

I am both a SBI and WA member, and I'm not sure about others, but I speak from my own personal experience, success and lack of success.
I deliberated very, very, very long about the question: SBI vs WA. It was very difficult.
Even until today, this thinking doesn't go away.
You see, with SBI, I built a successful 6-figure client-generation website for my physiotherapy business in Singapore that works day in day out on autopilot. And that was amazing. Still is. At least 10% of all my revenue was patients finding us through google from our SBI website.
SBI worked really well for me for that. But of course, I built the website and added articles over the years since 2010, and have amassed a sort of monster niche site, scoring more than 500+ articles at this point in writing.
But I struggled because I wanted to build affiliate websites, and all my SBI affiliate sites didn't work. I put in 100 - 200 articles, and it didn't work. Maybe because I didn't consistently put in the effort to make it also another monster niche site with 500+ pages. Maybe I didn't have the patience beyond 1-2 years. Maybe my copywriting sucks. Maybe I picked the wrong niche. Maybe I wasn't focused and had too many products.
I don't know. So many variables and maybes.
And I still wonder of SBI vs WA: which is better.
So....I just joined both. I started with SBI in 2010, and from my understanding, both run very similarly in terms of fundamentals and philosophy. Content > Traffic > Presell > Monetize/Sales (WA has additional component focused on commenting, which SBI dont)
SBI sites I feel tend to be more old-school "authority" monster sites that looks oldish/clunky but works (like how my physiotherapy site did), a la "old is gold" and less social approach with less hassles as there is no plugins etc needed to be done: we just focus on content. All updates are done by SBI team/management. All their videos also look much, much older, but it's just their approach to business.

SBI is much more expensive in a sense that it's $299 per year PER site, whereas WA is $359 per year + domain name costs, up to 50 domains. SBI doesn't have an actual "free to try" like how WA has for members to be free basic members for life, but SBI does have a 90 days money back guarantee.

Both are nice, but when you compare, having free basic membership for life always beats limited 90 days. And I'm ok with $299 per year per site if it works, but if it doesn't, it stings. For WA, because of the price difference, a $14+ sting isn't so painful (+ $359 of course, so technically if I have just 1 WP site based on WA, then WA is MORE EXPENSIVE...but once I have 2 profitable businesses on WA, then it's SO MUCH CHEAPER than SBI), so it helps to stretch my dollars a lot more.
WA is the more spruced up, recent (with WP), more social with comments, plugins, design etc. Of course the forum and community here in WA is very super and very easy to communicate and connect with each other, making the community aspect of WA one of the strongest pillar of WA.
My struggle is (1) SBI has worked for me for my physiotherapy business and WP hadn't (to date) BUT (2) there are so many WP success stories in WA and outside of WA that I cannot ignore it.
But this (1) vs (2) thingie is quite irritating itch, and I am experimenting to see what is the outcomes with WA by also writing a monster niche site in WA, update you soonest =)