Very few votes for the 180... I certainly prefer them to a Voyager or 80x.
Unfortunately, that's not saying much!
Personally I voted for the HST. I see myself as a pragmatist, rather than someone voting on the grounds of nostalgia. Simply, the HST offers the best compromise of proven reliability, comfort, go-anywhere capability and future ready design (even if it is now reaching the end of its life).
Reliability is self evident, they've been soldiering on for years, and also benefit from the "back up" of having two power vehicles.
Comfort is subjective, but, there isn't a single HST interior spec that I'd say isn't better than every other contender. Yes, the VTEC IC70 interior was awful as far as HST interiors go, but still far better than that of the 80x. Ride quality was generally better than the others (although latterly some mk3s did suffer with suspension akin to a space hopper, cally sleeper I'm looking at you). Interior spec was also superb, a full, proper dining car or shop area (GWR) was such an excellent feature, and one who's absence has been often noted on these forums, from new designs. If we also look at storage space for cycles, luggage etc, the HST provided. 80x & voyagers crucially lack this (although interestingly 180s do provide).
Go anywhere capability is self evident, to me, its something that's been a pretty major drawback for the 373s and mk4 sets (in terms of infrastructure compatibility, rather than power supply).
Finally, future proof design is really the biggie for me.
Will 180s ever be re-engined (multiple times in their life)? Unlikely.
Can we shuffle 80x's vehicles around when a technical issue (yaw damper crack perhaps) is found on one vehicle in nine? No, not without great difficulty.
Can a 390 be reduced to 4 carriages and work as a regional express unit, cost effectively, and in great comfort, even compared to contemporary newcomers, some 50 years after its inception? To be seen, but I'm sure we'd all have a similar expectation here...
It's not nostalgia, it's a clear winner.