Appologies for adding to the OT content, but here's some more input on the link Chris posted.
Not only is it from the company that sells GEX, it's written by the guy that develops GEX. So I'd say he is somewhat biased in his opinions.
There are some fair points in there, but there are also things that are outright wrong.
FTX Global works just fine with land class products from other developers. Despite using FTX Global and FTX Vectors I still have UTX land class active for Europe, and I have one other land class package for Asia (can't remember who made it right now, but they might