Should i get a 35mm prime or not...

I'm thinking about getting another lens for my SLR... a 35mm prime.
What i have already
K mount native
18-55mm F3.5-5.6 kit zoom.
50-200mm F4-5.6
What's in the catalogue
A 419 euro Macro capable 35mm 'Limited' F2.4
A 169 euro 'DAL' 35mm F2.8
The question is not which one (thats already decided) but does it add something that i don't have with the current lenses?
What i have already
K mount native
18-55mm F3.5-5.6 kit zoom.
50-200mm F4-5.6
What's in the catalogue
A 419 euro Macro capable 35mm 'Limited' F2.4
A 169 euro 'DAL' 35mm F2.8
The question is not which one (thats already decided) but does it add something that i don't have with the current lenses?