The FM2n with its smooth aluminum shutter blades is no worse/no better than the FM2 with its honeycomb titanium blades.

I find there is a big difference between a 35mm focal length - which seems 'normalish' - and a 28mm - which is decidedly wide angle in its perspective. As the lens gets shorter the change in perspective due to a few mm change in focal length becomes more dramatic.

If budget is a concern then the f3.5 wide angles perform every bit as well as their f2.8 and f2.0 cousins but often at a small fraction of the price.