It would be interesting to see how an older Gen quad core i7 Haswell compares to these new quad core i5 coffee lake chips
OP if you’re doing processor heavy work, like what you mentioned with photography and video editing, go with the i7
These new six core coffee lake chips are beasts.
For my uses, the software I require is generally office, and my late 2013 is still plenty of power for that! The basic functions of these intel chips hasn’t changed since the ivy bridge days so most business suite functions are more or less identical today. If you were doing that kind of work, which you stated you aren’t, then I would say go with the lowest end model as there’s no need for all that extra power.
For processor demanding tasks though, like video, photo and music work, the i7 should make a difference especially as time is money in those fields.