I own the X65F which the X55 is very similar to. I have to say for DCS A-10C it's awesome but also very frustrating, as it so nearly has everything I want but some important things are missing (mostly the dual-stage trigger but also the lights switch on the throttle). I also owned the X52 Pro (and the X52 and X45 before that) and there is simply no comparison with the X65F (and I presume the X55), but they were fine for most games (especially Il-2 back then).
If you can't afford the HOTAS Warthog I think it's a good choice, though I recently spent the money to buy the HOTAS Warthog and wish I'd just done that from the start.