M6 shutter speeds - is 1/1000 s enough?

[GWT]

I think I have my GAS under control (isn't that what all addicts say?) and have decided I should steady myself and focus on getting that one "go to" RF I've always wanted.

Thanks to you guys I pretty much felt the M6 was the one to go for, fitting as it was a review of one of the Leica M's I saw in a photo mag which made me fall in love with RF's in the first place.

But then I saw the Bessa R's (M Mounts) and thought "well it's not a Leica M but it is more affordable and it's shutter speed goes up to 1/2000 s!

Now my question is "does that faster speed really matter'?

I'm not meaning to make this about which is better, it's just does that faster speed matter?

Photography wise I'd be using either of those cameras mainly for street pics - loaded with a 400 speed film.

The quieter shutter of the M6 does make a different to me not that the bessa's shutter is a fog horn.

Surely every RF user dreams of owning a Leica but is it just the romance of it?