Columbus Mackinnon (CM) is a good brand. They used to make much of their stuff here, but now it varies depending on what line you buy from . Like alot of things (particularly involving safety), good hoists made here cost ALOT. It can be many times the price for the premium line from a manufacturer compared to the "import" line for the same capacity from the same company. Like comparing CM's 622 at $200 for a 1/2 ton to their Cyclone at $1000 for the same capacity
Another good brand is Kito. Made in Japan. Quite common in industry.
Capacity and chain length depends on what your lifting. I have a 1 ton gantry with about 12' of chain. This is in my barn with 8' ceilings. If I build a new place though, It will have much higher ceilings so I can take advantage of that extra chain.
Really recommend a gantry with a cross trolley. Even better if it is on wheels so you can roll it around. You can buy or build one.
Gearing up a proper chain hoist, trolley and gantry , one that is safe (that you'd "trust" with your life) and made in a respectable place like Japan, Germany, US or Canada will not be cheap.