28 // 35mm prime?

[hoodmeister]

I'm thinking about perhaps picking up some sort of mid-wide prime lens (somewhere between 28 and 35mm)

I really like my Sigma 50mm (macro) f2.8 prime, so that's where this stems from.

What i'd want from such a lens :

Good sharpness // general IQ (duh!)
low aperture (anything below 3)
Decent bokeh
compact!
not too expensive ¬_¬

i'm most likely to pick any recommendations up second hand, so even discontinued lenses are fine. I use a Nikon F mount.

Any recommendations chaps?

 

[hoodmeister]

Thinking about this a little more, I think I probably want a bit wider...

I'm now considering :
Sigma 20mm 1.8
Nikon 24mm 2.8

Both are a similar price (don't want to spend more than ~£200).
The Sigma is obviously wider and faster (good)
The Sigma is twice the size & weight (bad, but I can live with it)
The Sigma has an 82mm filter thread, the Nikon a 52mm (bad, but I can live with it)
There are reports of some copies of the Sigma reporting front focusing... Super bad, but I may not get a duff.

Hmmm. Decisions decisions. I can't find anywhere that suggests if either has significantly better general IQ than the other - both seem to be rather good (as long as the Sigma focuses properly)