Look at Ikea cabinets. Solid build; many options; long warranty. Just because they sell budget-priced furniture doesn't mean that you should worry you would be getting budget kitchen cabinets. A quality contractor I've known for decades put them in his own house. My nextdoor neighbor, who has a large house valued in the low 7 figures, tore out custom cabinets and put in Ikea cabinets when he remodeled about 8 years ago. The cabinets still look pristine despite 3 teenagers, a large dog, and two cats. Do a search on this forum: there are many informative threads on Ikea kitchen cabinets here.

You are talking about 2 different components of the cabinet. Plywood is for the sides, top, bottom and shelving in a cabinet. Solid wood would be for the face frame and cabinet doors. MDF is used for cabinet doors - not the cabinet box. Don't get confused by all of these things.

You will always see bad reviews - people don't often post the good things

Also don't be afraid of furniture board ( particle board ) in US made cabinets ( I can't speak about imports ) . I have had my cabinets for almost 20 years now with no issue. They are Medallion.

Kraftmaid is also another good midline cabinet with tons of options.

What were the brands that you have looked at so far and priced out?