Would this be for a Canon slr? If so did you consider the 50mm f/1.8? I have this lens and it is fantastic! It is also an inexpensive lens and one in which many photographers use.
It's K mount (pentax/sony) and 35mm, so that's not an option (although it is an awesome lens

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I'd say look at what you want to do with the 35mm....If it's for landscapes and still shots, consider buying an old MF lens. You can pick them up for peanuts and the IQ is normally hugely better than all but the most expensive AF lenses. All you have to do is make sure it can be adapted for K mount and focus and set the aperture manually

Of course, if the IQ of the 35mm prime is not noticeably better than the 18-55 at 35mm then there's no point in having it

.mic