To have at least two, one to cut (only) and the other one to grind or flap disc, and/or wire brush, is also how I roll.

In the mid '90s I bought a 9 dollar harbor freight for one job, thinking I only needed it for one job and it could die after that, and I wouldn't care.
That stupid thing kept going forever and finally died last year.
Only thing I did not like about it is, it had a latching feature that could lock the switch "on": no bueno...but it got the job done.

For an extra I tried a another el cheapo from menards, about 9 dollars.
That one did not disappoint, and died a couple months later as expected.

So last year I ended up replacing both of those clunkers with Metabo products (which seem to be Hitachi at the core).
They are okay and haven't had any issues with them.