Hey guys
Long time...too long

I am planning finally to put some love in my 3rd child (the car, but i could call it also second wife, since i drive more time than the time that i spend with my wife :P).
I was planning to have an engine overhaul, and was wondering about good and reliable places around the bay area; so far I have heard of a couple of mechanics that works on 911 mainly, but I would like to hear your experiences and feedbacks.
The car runs fine, but the seals are old; the pressure gauge does not give me hints that there is a leak, but I find oil sometimes where i park (nothing big, few drops around the engine area, and not even that often); plus I do not know if the power that I get is the full power or the partial one...the car has more than 200K and I doubt that any work was done on the engine.
Some people told me to not fix it until it breaks; but I am not sure if this is really a good idea
Another thing that I would ask: is there a difference in "services" ? like there are different levels of overhaul of the engines? And which one would fit my case?
Thanks as usual!