You may wanna consider the Patagonia Forra boots. I’ve been using them since October and estimate that I have 250-300 miles on them. The longest wade/walk trip I’ve worn them for was 11.5 miles in one day and I walked/waded over 16 miles in them in 1.5 days, earlier this week.
Like all boots, there are trade offs, but my experience is they are FAR superior to the simms Flyweight boots (wore through 2 pair of those last year… my humble opinion is that those boots are garbage and my honest opinion contains a lot more expletives…. So I’ll just be humble

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The Forra insoles are junk. I would suggest buying a big enough pair so you can replace them with a thicker, more cushion/support insole.
The Forra laces, though they look cool, broke in the first couple months. This is mainly due to there being no loop on the boot to hook the bottom of your waders. Replace them with long aftermarket laces ( I use Ironlace Unbreakable) so you can 1) tie a dropper loop in them to attach your waders and 2) wrap twice around your ankle for better support.
The Forra ankle support isn’t the best… but better insoles and laces will help… a little…
The Forra soles are hard rubber built like monster truck tires. They work great for hiking… but take a while to get used to in the river. After wearing the simms flyweight boots with soft rubber, these felt like a brick at first. (P.S. the talk about “sticky rubber” is marketing fantasy… there is soft rubber and hard rubber…and soft rubber feels better but wears out quickly…sticky rubber”only exists for drag racing slicks)
The outer rubber “shield” around the top of the sole provides adequate protection for your feet, but the adhesive they used isn’t great and it is starting to open up in spots.
The sole “life” has been decent… I was hoping to get a full year out of these boots (or approx 500-600 miles/+100 wade trips), but I’m not sure they’ll make it. $300 for a pair of boots to last less than a year seems a bit much… but they have taken hard use/abuse, and they’ve been wet almost the whole time since I first wore them.
Long story short, there are massive flaws in just about every overpriced flyfishing clothing product on the market, but given my experience with the Forra boots (and a lot of other wading boots) I’d buy these again in a second.
Hope this helps.