There are a many brands and options when it comes to toilets for homes these days. It is important to avoid unknown brands as the lifespan on internals is generally poor, plastics go brittle and need expensive repairs. We have had poor outcomes from more entry level products from major suppliers such as Reece and do not recommend their entry level brands.
Key considerations are:
Are spares readily available?
How expensive is the toilet seat to replace?
What mechanism system is used?
Mechanical is best
Avoid pneumatic as these need early and expensive maintenance
Is the brand well known?
Caroma
Villeroy & Boch
Geberit
Parisi