Keep the 30 for when you go to restaurants/wherever and you need a kind stranger to take shots of you and your food/date/partner/etc. This is the only use I have for AF but it is significant
The Sigma 30 and black kit lens. I have only used the kit lens once to check it out, and I haven't used the sigma at all since getting the Helios. Is there any reason to keep an AF lens? Am I being hasty?