You'll be happy to find that you can get a very good hood without breaking the bank these days. Here are a few things you'll want to watch out for. Keep in mind, this is written for a hobbyist, not a professional.
Clarity Rating - For me, this is probably the most important feature. It is very difficult to make a good weld if you can't see what you are doing. A rating of 1/1/1/1 is considered 'perfect'. For hobby use, I'd even consider a 1/1/1/2 hood since most of what you'll be working on will be on a table.
https://www.thefabricator.com/thewelder/article/safety/1-1-1-1-clarity
Consumables/Wear Items - You'll want a hood that takes a standard size inner and outer protective lens. You don't want to get stuck having to buy an overpriced proprietary shape from a specific manufacturer. Buy a bunch of extra lenses right away. Don't cheap out - replace them as they start to get beat up. A 1/1/1/1 clarity filter doesn't do much good if you never replace your outer lens.
Look for a hood that has a replaceable battery. Some of the cheaper hoods on the market bury them in the panel which means when the battery is shot, so is the hood. You'll have to either cut open the panel to get to the battery, or replace the whole hood. Buy an extra battery or two right away so you don't have to waste time trying to track one down in the middle of a project.
Make sure you can replace the headgear when it breaks. Luckily most hoods use a standard mounting method which allows you to put a better headgear onto a budget hood, giving you the best of both worlds.
Comfort - Comfort is subjective and very difficult to judge if ordering online. When you get your hood, make sure you can get it adjusted to feel decent on your head. It'll more than likely not be perfect, but for a hobbyist, that is less critical. Obviously if you can't get the hood to feel right, you aren't going to enjoy using it and are better off returning it and trying a different option, but you need to temper your expectations in this area if you are going to be shopping for a budget hood. If you make your living as a welder, this is much higher on the priority list.
True Color Lens - Basically, how accurately are colors transmitted through the lens. A true color lens is a 'nice to have' feature for a hobbyist, but not a must have.
Window Size - Bigger is always better, but bigger also drives up the cost. Look for the biggest lens in your price range, but don't forget the old saying "quality over quantity" - optical clarity is still more important.
