Reddit mentions of OXO Good Grips 5-Quart Mixing Bowl, 5 Quart,White/Black,5 qt

For all your cooking needs, go shopping at a restaurant supply shop. There are many online, even, and there may be some near you that are open to the public (e.g. Costco Business Center that I think deliver anywhere via UPS for residential purchases, and my local favorites East Bay Restaurant Supply or Trimark Economy Fixtures near San Francisco/Sacramento, Surfas in LA).

Often they aren't known brand names, or it's something from like Update International that produces stuff for cheap in Asia, but the quality and price generally can't be beat. Either it'll be dirt cheap (think like less than $1) or it'll be super expensive but it's durable as hell and easy to replace. I no longer go to the likes of Sur La Table for shopping unless it's something that's specifically for home use.

In terms of materials: glass (like Pyrex) is probably the best because it's nonreactive, but it's very heavy and sensitive to temp changes. Metal is awesome because it's super light (well, you can buy weighted if you want) but you can't store acidic foods like tomato sauce in a metal bowl for long. Shop around for stainless steel if you go metal rather than aluminum. There's also ceramic, plastic, silicone, wood and copper bowls too (among other materials) but most of those probably aren't worth it unless they're doubling as serving bowls for things like salads.

Other things to keep in mind: There are bowls that come with lids, ones that collapse, ones that come with pouring spouts, sets that nest easily, and more. Pick and choose based on what you need - but many of these little features aren't easily available at restaurant supply shops since what does a restaurant need collapsible mixing bowls for?

As a hobbyist baker though, scratch my restaurant supply shop idea if you do a lot of hand mixing/kneading. My favorite bowl for baking is an OXO plastic bowl that has a grippy bottom so it doesn't slide around on counters and a handle and spout to pour batter into other pans easily. I only wish they made bowls larger than 5qt so I can use it at my restaurant too.