Regarding the F-4 FM, I think she is more or less spot on.
You really need to re think the way in which you fly this her as her characteristics are quite frankly as different from the usual IL-2 aircraft as is possible. It really is a case of almost learning to fly all over again.
Yes, the controls lock up, but then again this is more or less accurate. If you attempt to make a tight turn at high speed, the F-4 will fight you. Hell, if you are not careful you will pull a wing off very easily.
You cannot dogfight in the way that you could in a Wildcat, Corsair or even a Sabre. You need to plan ahead much more. The extreme speed of the F-4 requires that you know (or can estimate) the relative speed and heading of your opponent (difficult using the Mk1 Eyeball only, granted - just wait for working RADAR
) and then anticipate where he will be in 5 seconds or so...
You then need to smoothly guide your aircraft onto an intercept heading (yanking and banking in the F-4 does NOT produce the desired result) while remembering to give yourself enough range between you and your target so that you can either a) achieve missile lock or b) maneuver appropriately to bring your guns to bear on him. careful co ordination of the rudder ailerons and elevator are needed. Again, you cannot yank and bank. Just as has been said earlier in the thread; don't even try to turn and burn - use your massive speed and climb advantage. You are not flying an A6M.
You will use the vertical much more often in the F-4 than you ever did in any other fighter in order to reduce your turning circle. But this is good as the F-4 usually has a shit load of airspeed to trade for altitude.
Lastly, the AiM 7 is a joy to use, so long as you take your time and get a good lock (just keep the target in your reticule for a couple of seconds longer than you think you'll need). I also personally have the habit of launching the Sparrow in pairs - so if one goes rouge the other generally hits.
As for the low speed handling - she's fairly stable and lands on rails once she settles into the glide path. Even carrier landings are not out of the question.
Gerax is correct too; a lot of the QMB missions that exist don't have the capacity as they are now to handle the F-4; she is just too fast for the AI to handle.
That said; I think I have fallen in love with IL-2 all over again...