I see what you mean. In all the years I've used ORBX I had a few problems. Mainly elevation issues, which was easily fixed for the most time. I had waaaay more issues with FSDT and Flightbeam, mainly due to Addon Manager or Coatl (Thankfully FB product don't use that anymore). But here's the big BUT: Like every product out there, Cars, TV's, Computers, Services, you mostly hear the bad things. Because people who aren't satisfied are way more likely to express that. Because they paid for something that doesn't work, they want it fixed. While the people who don't have problems are way less likely to express that, unless they are being generous or asked. And to be honest, flightsim requires some level of computer knowledge to fix minor issues or optimize the sim for your machine. So a lot of issues can be resolved quite easily using forums or support tickets from developers.
The only thing I don't particulary like about FTX regions, is that it's landclass. I rather have photoreal, so that's why I enjoy FTX True Earth and Godzone so much, they combine the best of two worlds. Nice autogen and photoreal textures. But to be fair, FTX regions do really compliment their airports a lot. ORBX usually has a 50% off sale at the end of the year, so I'd say save some money starting now, and take the gamble with Ketchikan and/or Juneau. I have the first one, and it is a joy to fly into!
If you're using legacy or outdated sceneries, there might be some conflict. Global Vector for instance has a built in tool to exempt any airport from their enhancement, reducing the chance of a compatibility issue. Newer sceneries, both pay- and freeware usually have some kind of file that makes the airport compatible with FTX. To be honest, I couldn't go back to vanilla after I've used FTX Global + Vector