Nothing but joy, here…I use a Warthog stick and a Cougar throttle. If your TQS is still holding up you can 1) convert it with a Bodner board; or 2) buy a TUSBA from RealSim. I’ve done both, and both have their easy points and tough points. For one, converting with a Bodner makes your TQS Mac/PC compatible (a WH stick works VERY nicely on a Mac as well). The TUSBA can be a bit fiddly to set up, but once you’ve got it you’ve got it.
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There is also another option if one still wants to use the TQS: Leave it plugged into the base of the Cougar stick. Have done that in the past and worked just fine alongside the Warthog stick. I simply placed the Cougar base in a corner under my desk so it didn’t get in the way.