Replaced both toilets with brand new ones, replaced the 2 car- garage door with a brand new one, had all the walls freshly painted, put brand new baseboards in, and had the kitchen cabinets painted as well.

I would love any advice on landlords' favorite brands or models that last well and are not complicated.

With fresh paint throughout inside and out, brand-new roof, dual HVAC systems, updated water heater, stainless steel appliances, lighting fixtures, outlets, countertops, and PEX plumbing just to name a few.

What I've seen before is the only time rules are enforced are when neighbors get pissed (ie STR neighbors).I would side with caution on this, especially if it is a newer built community where the rules are fresh with people. 

A fresh coat of paint in a modern neutral color and updated lighting can really elevate those spaces.Adding a deck or patio can be a great way to increase usable living space and boost value.

Or can I get the Costco brand items?? 

It would be like if someone prepared to sell by painting to create fresh visual interest, but chose fuscia and lime green...those colors would certainly catch the eye but I'd never claim that they overdid the curb appeal by painting with too much visual interest.

Most of the time they are young 20s and fresh out of college and never owned a pierce of real estate.

After transitioning all four residential tenants, we gutted each apartment and started fresh.

If local deals aren’t working, try out-of-state markets or connect with local investors for fresh ideas.