The Amiga was a reliable well-polished machine when it was released. This, like most "vintage" computing projects can't be for more than the love of the machine.
I can't say I ever "loved" it nor found it reliable. By 1998 it looked quaint compared to NT4 etc.
Stop right there. Multitasking without memory protection and reliability do not go well together. It was a fun machine, but reliable it was not.
Stop deluding yourself, Commodore had a ton of reliability problems. Amigas came from factory with electrolytic capacitors soldered backwards! (and afaik they were also backwards on the factory diagram).