This is interesting. I have used a T-6 for exploration - decent jump, good boost, all the internals you need etc. (
EDSY - T-Sixplorer)
However, compared to the Dolphin (
EDSY - Ecco Explorer), the T-6 comes a poor second. The T-6 is more expensive, has less jump distance, less jump range, less boost and less agility. In fact the dolphin can land places the T-6 could only dream of . And heat? The T-9 always runs hot while scooping but the dolphin is so cool it can charge the FSD while scooping.
And personally, I think the dolphin is a better looking ship.