Unless you are wishing to use the 1/4000 shutter speed, I doubt you will be dissapointed with any FE2 body.
I have one of the earliest FE2 units, purchased just after that camera was released. I have put approximately 1,000 rolls through it and while it doesn't look like new these days, it still works well. 1,000 rolls at a minimum 40 shutter firings per roll, is approximately 40,000 shutter fireings. If my memory is correct, the FE2 shutter is supposed to be good for 100,000 fireings.
This is the first I have heard of the Titanium honeycomb shutter having issues, I will admit though, that I have never sought to find this out.
With regard to the 1/4000 shutter speed, well it may get there on a good warm day when the dry lubricant is working well, but in really cold weather, I'm not too sure.
When I first received my camera I was quite excited with the possibility of freezing all sorts of action at 1/4000 of a second. I sort of noticed that maybe the shutter wasn't quite reaching the stated top speed. Some tests later I concluded that it was perhaps 1/2 a stop to a 1/3 of a stop slow whch seemed to be dependent upon the ambient temperature. Below about 10C it didn't seem able to get maximum speed, in summer with 35C-40C it certainly attained full speed. I tested with film by photographing a step wedge stuck to a glass window. One other FE2 owner concurred with me, so I was reasonably sure there was nothing out of the ordinary with my body.
Top shutter speed notwithstanding, I would think I have not used any camera in the last 30 years where I used a shutter speed faster than 1/1000. In the main I mostly use 1/125, 1/250, 1/500 with very rarely 1/1000. I took some portrait shots yesterday evening as the sun was setting on a wonderful spring day, 1/4 at f22 with a view camera.
Mick.