[Kurona]

X is a favourite of mine, and it's one I would definitely recommend. At about 22 episodes long it's a fantastic look not just at the standard set-up of Ultraman shows but also how it's evolved and what morals have become core to the franchise in its 50 year history. Also doesn't hurt that it's got some really sick crossovers!

Another that's often recommended - and what I started with - is Orb, the 50th anniversary show (and the one after X). At about 25 episodes it's a slightly less standard, much weirder show that nevertheless is a great time and one I'm pretty in love with.

Something really nice is that all the New Gen shows - all the stuff after the Zero movies - are 25 episodes long at most, so even if you're not digging something it's much easier to give it a watch and see what you think compared to the large 50-something episode commitment of most Toku shows. Most Ultra shows before the Zero movies were about 50 episodes themselves, though there's also notable exceptions such as Max and the OG Ultraman being 39 episodes. And then there's Ginga, which is 12! Basically, you've got a lot of short options if you want to quickly sample what the franchise has to offer.