Or if you play online (or both) get HSFX 5.0.1.
I play only online, on the Battle-fields servers, and i allways use HSFX. Has new sounds, new flyable planes, maps objects etc. Simple install and stable.
Another mod you might want to try is UP3RC4. It also adds planes, sounds, maps and such.
I'd say just copy the main 4.10.1 install so you get 4 copies. And install each folder with it's own mod. That way you will have the least trouble.
Just try them and see wich suits you best.
HSFX 5.0.1 (latest)
UP3RC4 (latest)
DBW.
Both Mission4today and SAS1946 have them i think.