Of the planets you listed it would be Venus. Snowy (led) mountain peaks and a truly different site then all other planets. maybe pluto and the reason would be mainly because nobody saw how it looks there (yet)
Also even diving into the atmosphere of gas giants would be a short pleasure because very soon everything would be dark. Maybe diving into the hexagonal form on Saturns pole would be nice since it lets light deep into the planet. Seeing thousends of miles high clouds would be interesting. the diamond "rain" on neptune if it happens, then in the deep layers. You couldnt even see it.
But the by far visually most interesting body Titan is sadly not listed. Crystal clear lakes rivers and super slow rain combined with a landscape out of water even the desert is made out of water grains. Also crystal clear means you can see on the bottom of every lake no matter how deep it is.







