What about all these deal x knock offs?

The two factors that interest me are how the beam pattern looks with the three-way reflector - and of course whether or not the thing actually works for a season or two...

Anyone ever do a side by side throw test ? What's the general take on the sub $40 MS knockoffs? I've been using the regulars for a couple of years - my deal x ms overheated (first ones) the replacement has an ffed up switch.. But Geoman and other US ones all are still working.....