I have a Joule Performance eSports Ti which has a Nvidia RTX 2080 TI, a Playseat Air Force seat, Oculus Rift VR googles, Thrustmaster – Hotas Warthog throttle and stick, Thrustmaster TPR rudder, little wifi dongle, keyboard, and a mouse. I use DCS World with the P-51 and the Christen Eagle II.
For me, it's nothing less than stunning. It's very smooth, lots of detail, and really feels like flying. The main goal is to practice rudder skills. There is a bit of a curve to get this working – it was not plug and play, but with a bit of time and googling, I got it to work.
My goal was to train my feet on the rudder before my first flight in the RV-8, and it served that purpose. The systems are getting a bit dated, and I hardly use it any more since I have my RV-8, but these are excellent trainers.
I agree with abaden - you need a powerful PC and a powerful graphics card to push the pixels out to the VR headset fast enough. I spent about $4k on this equipment, mostly on the PC and graphics card in 2019. Probably worth $1k today.