Ok, I like 109s in general. I spent time last night teaching a veteran the airplane last evening. He likes the 109K. So, he took the 109K and I took an La-5FN. After 10 minutes of utter domination by the LaLa, I moved him into the 109G-2. I took a 109G-14. Immediately, he found that the G-2 was easier to fly and started showing improvement. After a little over an hour, he had learned how and when to use flaps, how to maximize the merge and began getting the hang of flying where he was looking, rather than looking where he was flying. My advice was master the G-2, move to and master the G-14 next. Then get back into the 109K-4, where he'll suddenly discover how much easier it is to manage.
As a dogfighter, I prefer the G-14. For pickin' from the vertical, the K-4 is a great bird. Find yourself Co-e against a G-14 and it can ugly should you attempt to maneuver fight.
As to P-47s, I prefer the P-47D-25 to the -40 for aesthetic reasons. It's just a better looking airplane with better skins. It's also lighter, so it's handling is superior. I'll fly the D-40 to pound a GV horde, due to the better climb rate (I'll also take 6 guns and the short clip to maximize climb). But for the simple joy of just flying a Jug, I'll take the D-25 over the rest.
My regards,
Widewing