I will not hazard taking any guesses at the quality of models any models that I have not seen.
However, with historical plastic manufacturers at the moment having relatively limited capacity for churning out new products, I think both the manufacturers and the customers would probably be best served by the manufacturers going for a more diverse variety of topics than having multiple manufacturers producing the same topic.
I have already heard a number of people commenting that it is a pity that we already have two manufacturers cranking out Napoleonic French and British, and another two manufacturers cranking out ancient Celtic and Roman infantry.
For sure, if you are totally devoted to the War of the Jenkings Ear, then being able to choose from amongst two different plastic kits for the Bavarian horse-grenadier kettle-drummers (with left-handed option) would be a great thing. However, many people might rather appreciate being able to choose between a kit for WotJE Bavarian horse-grenadier kettle-drummers or a kit for Balkans War bicycling Bulgarian signal officers.