I currently have XP11 & 12, P3dV5 & ^, and MSFS on computer. Yes i have a lot of drive space mainly M.2. New machine last spring after 5 years with the previous one.
In the not too distant future XP11 and P3dV5 will be removed as more add-ons are available for others.
I like V5 for the aircraft and weather. Wx radar seems to be the best developed on this sim and as a retired Cdn pilot I find for me WX radar adds to the immersion factor. I suspect V6 will end up being just as good. The majestic Dash8 works well and on short final are the Xtreme prototypes Lears and somewhere behind that is the MadDog. Plus for those in Canada there is good add-on scenery from one coast to the other and up into the high arctic. This sim will come together nicely as time goes on.
MSFS....The scenery is great and the add-on selection is very good for both aircraft and scenery. that said for me the aircraft are missing something except for those at the top of the food chain without naming them. WX has gotten much better or time. It's good but for me is missing something.
XP12....After taking a break from XP12 and spending time on the other sims then coming back to it I am blown away by the aircraft available and some of the add-on scenery. If I had to choose only one sim it would probably be XP12. Different strokes for different folks. A couple OEM aircraft are worth mentioning...the Citation 10 is interesting but having never flown one I can't speak to its accuracy but it seems well done on the whole. The other is the King Air C90. The last years of my career were mainly in a gov't office but I was checked out on the 90, yes the one with the gutless -20/21 engines* modelled here, got upwards of 100 hrs/year including annual Level C/D sim training) and when i first fired up the XP11 demo I was really surprised just how well it was done right down to the cockpit being almost identical to the one I flew (eventually upgraded to the G1000 - I did miss the old analog).Add-on aircraft for XP12 are very good.
*Having flown turbine RW in the 70s, 80s I was no stranger to temping out on a warm day and the need to be smooth when extracting max performance available.
XP12 does pretty much everything well and I'm really enjoying it. Quite enjoy this 7370300.