I would go UPR, for a couple of reasons,
1. Placement, the Picture on the link you posted, shows a small can right in the spot where a windshield washer fill tank would go if you were to install a meth kit from alky controls
2.Size, the UPR can looks larger than the one in the same photo, and it in fact is larger, it holds 8 oz. versus the 3 oz. JLT. If you dont mind emptying it more often then more power to you
3.Install instructions, show taped hose ends and other none professional s***, good final install looks and usefulness of clip connectors convey forethought, forethought means they gave a s***, which to me means the UPR product will most likely perform better, (though I actually wouldnt know as I dont own one),
4.No clean side separator, I didnt see an option for a clean side sep. like the UPR has.
I run a UPR and have no complaints, It works exactly as advertised, with no leaks, fits in place with my relocated window washer fill tank, has a clean side sep. and holds enough fluid that I can wait alittle longer before checking it.
Just my opinion...