When I bought my 172 I looked at numerous alternatives that included 2 mk1 172s, a mk2 172, a mk2 172 cup and a 182.
I preferred the interior of the mk2/182, and the exterior was a lot more modern but not necessarily more to my liking.
The 182 was up for a lot of money (this was 2 years ago) so discounted it on those grounds.
The FF mk2 172 was ok, again quite a lot of cash at the time and wasn't blown away, it was decent though.
The Cup was sold before I got there, gutted
That left the mk1, for me it was the best option as it ticked most of the boxes, I could live with the exterior (I actually like it the most now), the interior isn't that bad (looks far worse on camera imho with the colours) and importantly for me it was a lot cheaper
Price difference isn't so huge now so all I can say is go and drive them, get whichever you prefer
Or to look at it another way, get a mk1