Nice article, certainly useful to those who are starting exploration and are possibly overwhelmed by the amount of choices and options available!
After about 2000 hours in game, I have come to some conclusions about exploration that are very different to what I thought at the beginning of my trip.
Jump range is no longer a priority to me. Nice to have, but exploration to me is slow and deliberate, with lots of landings, and not getting somewhere asap and in the least amount of jumps.
Nowadays, I would consider the following to be my favourite exploration ships:
5 - Diamondback Explorer: cheap and good for a starter. Nowadays I use it as a bubble shuttle, because of its speed: it's more a ship to get there asap, rather than a ship I want to travel with. My first solitary experiences away from civilisation were in it. Good memories!
4 - Dolphin: possibly the most pleasant ship to fly for me. It handles beautifully, with no overheating problems, it is so pleasant. It's the comfy explorer (which sounds a bit of an oxymoron). It cannot be higher in my list because of the next ship.
3 - Hauler: Odyssey unlocked its potential for me. It's a magnificent exploration ship for Exobiology. Extremely fast (Enhanced Thrusters boost well above 600 m/s), a massive 45ly jump, and its extremely small footprint make it land absolutely everywhere. Only the Sidewinder is smaller, and without the utilities a Hauler can carry. After having flown Asps, Kraits, Saud Krugers, I came to the conclusion that the Hauler is not just for new starters, but something that you come to appreciate more as you mature.
I left my AspX behind to use the Hauler, and it was the ship that made me finally realise that an exploration ship has to be able to jump AND to land. Its only defect is the limited visibility.
2 - Asp Explorer: the quitessential explorer to me. It has the looks of a working ship, no fashion statements there, a magnificent canopy that leaves nothing to imagination, a long jump range (if one wants it), and enough module space to cover a number of exploratory activities without fear of being left stranded somewhere.
1 - Type-7: the ugly duckling, that overheats when I sneeze, and so big boned that Medium landing pads do not want it (because of its big forehead). With some loving care, the heating issues do not present themselves, and suddenly this ship, with its amazing maneuvrability becomes the jewel of my collection. It has a jump range that exceed my needs, nowadays (>50ly), it has an excess of module space that lets me carry whatever I want, plus some more, and that signature Lakon canopy I love so much in an explorer.
Also, its footprint is smaller than that of the most popular Krait Phantom, so that's a bonus for me when it comes to landings. It's definitely my ship for very long trips, my home away from home.