There's quite a big of dumb going on here, so I'll just give you information sans brand names, save one ;) and let you choose merrily.

1. https://en.wikipedia.org/wiki/S_number_(wool) is what you want to learn. This is the standard for wool suiting. A lower number is what you want. S100 is probably the right mark. If the suit makes no mention of the S number of the fabric, you are looking at a Kmart suit.
2. Polyester content of zero. Polyester is hot and you want to eschew its use. But...sometimes a deal or a look wins the day.
3. Tailoring. Not a BIFL premise but one that 90% of men need to hear. Find a suit tailor. Your suit does not "fit perfect" nor do the pants just need hemmed and the sleeves shortened which many places do next day for $0. You need a fitting with a tailor/seamstress and your budget for this should be $100 per suit.
4. Deep closet. If you dress business professional M-F then you need a deep bench. You goal should be ~15 suits. If you must wear a suit this can be challenging. If you can mix it up with sportcoat/dress pants, things become easier as you can mix and match items easier. Remember eBay and know your size and traditional suiting styles. I have found several titanic Savile Row items on eBay for $50-$100 because .0001% of men have ever heard of Huntsman or Chester Barrie in terms of suiting.

And as stated by someone else, Oliver Wicks ticks many of these checkpoints for new. Spring for full canvas for the additional $110. And DO flex their after purchase tailoring refund.