Need Right Screen Locker(have tried several...)

[byPalmHiWM]

I'm trying to find the "right" screen locker. HAVE done much searching and testing- hoping someone here knows of something.
--What I am trying to accomplish: keep device from making "case" calls, entering into apps, etc., when it is woken up or accidently turned on.
--What I have tried: S2U2, Throttle lock, TouchLock pro, PocketSheild,... and I think a couple others for which I have forgotten the names.
--THE PROBLEM: all of the above apps mess with regular functionality of the phone in a way that I have not been able to correct or work around-generally they either stop completely, or slow down, blue tooth auto-answering (so much that I miss calls) which is critical in my work. (I could go back an produce exact issues to list if needed)
--The solution I need- an app that simply locks the screen when it comes on until another action is taken (slide, etc) but does'nt get involved in everything else- show notifications etc while locked and don't mess with bluetooth, let the phone answer.
BTW- I am required to lock by IT dept sync I sync with exchange server.
Maybe I want to much but it's worth a try...
THANK YOU