Alright, I'll add a bit of my reasoning for each to show I'm not actually just trolling:
1) ROTJ - Has speederbikes, B-Wings, Ackbar, Jabba the Hutt, an absolutely incredible score, and the most impactful lightsaber duel of the whole trilogy.
2) AOTC - I love everything about Coruscant in this movie (especially the retro future vibe), and I greatly enjoy Obi-wan's detective story and the Kaminoans. The coliseum battle is a lot of fun too. This movie has my all time favorite scene of any Star Wars movie (the shot when the Clone Troopers shoot down the droid ship and it crashes back to the planet and everybody's fighting in a dust cloud). Padme and Anakin's shitty love story can't bring all of this down.
3) ROTS - Obi-wan and Anakin's duel is great (silly lightsaber flourishes notwithstanding), and mostly everything with Palpatine is great. That Yoda/Palpatine fight is one of my favorites, and the troopers executing Order 66 gets me every time.
4) ESB - I've always found this movie to be fairly slow and boring. It's all about character moments and yada yada. That's all well and good, but what I really love about ESB is the Hoth battle. Robot dinosaurs? The 8 year old in my says YES!
5) ANH - I mean, this is the set up for all of it, right? The Mos Eisley Cantina, Obi-wan's explanation of the Force, X-Wings, landspeeders, Jawas - this one gives us the set up for everything. It's really basic though.
6) TPM - Darth Maul fight. Pod Race. Jedi melting doors with lightsabers. Droidekas. There's a lot of fun stuff in this movie. Jar Jar never bothered me all that much. He's a dumb character, but it's not like he's the only dumb character that's ever existed, let alone in Star Wars.
7) TFA - The lightsaber battle at the end is great, the Millenium Falcon flights are fun, Han Solo's back! and the whole cast of new characters is fun to watch hanging around and interacting with each other. However, the new music was dreadfully unmemorable, the alien design too often looks like it's cribbing from Lord of the Rings, and I had an unshakable feeling that I was just watching fan fiction for most of the movie. Another, bigger Death Star again? Really? It's fun. It's fine. I don't dislike it, but it also didn't entirely connect with me the way even aspects of the prequels did. I would've rather had Thrawn.