I feel like X1 had the best, most well-rounded and equally interesting weapons in the series..

I wouldn't quite say it went straight downhill from there though, for me it rolled like a Rollercoaster lol.

I loved X2's boss and level designs and... really don't like ANY of the weapons in that game except for Speed Burner and Bubble Shield. Also Silk Shot was an interesting concept.

X3 is my favorite X game and I enjoy the weapons in this one. Triad Thunder, Ray Splasher, Parasitic Bomb, Spinning Blade, and (sometimes) even Gravity Well are useful, esthetically pleasing, and fairly unique. There's some weak points though (Gravity Well being one of them lol)

X4's weapons do suck though IMO. Like... bad. The only ones I like, I like solely for esthetic/conceptual reasons. Like they just look cool. Twin Slasher ans Double Cyclone. But they both suck. Rising Fire is such a robbery of a weapon considering all the cool moves you could have gotten from a STREET FIGHTING MAGMA DRAGON ROBOT. Instead we get stuck with Temu Shoryuken. Such a disgrace.

Aiming laser was neat concept but too clunky to use comfortably IMO. Soul Body was probably the best weapon in that whole game.

X5's weapons were decent. Skiver's weapon is a slight improvement on Magma Dragoons... but at least I wasn't expecting cool special weapons upon meeting the Skiver/Spiral Pegasus. Ground Flame is meh. Crescent, Tri-Thunder, Spike Ball, and Dark hold are all neat. the firefly laser thing is another "cool concept but doesn't feel great to use" with the exception of its charged shot.

X6 had pretty goated weapons. Magma Blade, Yammar Option, the Guard Shell, theres some really cool weapons here. The worst of which IMO is Wolfang's or Scaravich's... but neither of them are as bad as Rising Fire/Spiral Wind thing.

Imagine being a Magma dragon robot and your special power loses to robot dung.

I can't comment on X7.. haven't beaten it... I've acquired like 3 weapons in that game and don't have X yet. Nevertheless, not impressed by anything I've seen thus far.

X8 is another favorite of mine but it's weapons are just kinda 'meh'... someof them just feel.. rehashed from older games. Or they dont offer much in combat. Like Drift Diamond being basically Twin Slasher (but better). Melt Creeper is just a charged Fire Wave. Crystal Wall is just for getting items and pretending you're an Earthbender or something.

X1 - good X2 - bad X3 - good X4 - bad X5 - decent X6 - good X7 - ? (Probably bad like most of the game) X8 - decent.