Depends on if you want a tabletop or a larger one with legs. I had a small tabletop as my first grille in my Bachler days when I lived in an apartment. It used the small bottles, then later graduated to one with a full-size propane bottle and legs after I bought a house which allowed me more freedom. Then moved on to a bigger one yet and added a rotisserie to the next one, Now I am on maybe my 7th or eighth grille and smoker. They all work, just some work better, depending on what you are trying to do.
I still have my first baby propane grille which I stripped out the old burner and parts and throw briquettes in it if I want to go to the lake for small stuff..