Exo Terra proportional t-stat? Any good?

[RXLReptiles]

So the title kinda says it all, but does anyone have any information or feedback on the Exo Terra 600W proportional t-stat that came out last year?

I saw it recently on LLL Reptile and a few other websites going for $40-60 and it seems like a really good deal for what it is. I just don't want to waste my money if it's junk. I also feel like this could be a great t-stat to recommend to new keepers outside of just the Jump-start off Amazon, if it's worth the money and works.

Thanks y'all

-Bear