I've got the Cooper's Micro Brew kit,that came before that one. It gives me good service,& that course threaded lid just wont blow.
But the DIY one just slides snugly together,with no airlock. But the spigot Comes apart for easy cleaning,so that's a bonus. The pet bottles work quite well,imo. But at 25.16oz,it's def more than 1 pour,if you use 16oz glasses. But less than two.
That's why I started using 12oz glass bottles. More to bottle up,but single,one pour servings so you don't rouse the trub with a second pour.
But the ale pale sort of starter kits may be beefier than the DIY,idk. Never used the new one. A good point is to get one where the fermentation vessel has US standard & metric graduations. Makes life easier no matter where your beer kit comes from. Plus the cooper's fermenters,like the good ale pales,have both graduations printed on them. They go from 6.5G to 7.9G.