As far as Kamen Rider figures, I only collect the S.I.C. versions and not the S.H. Figuarts-- although they're tempting me! And here are some of the reasons why they are tempting me.
First up is Den-O in his Super Climax Form where all the Taros possess Ryotaro at once. This is Den-O's strongest form, but all the Taros must work as a team within Ryotaro's body at once in order for him to be an effective fighter-- which isn't always easy.
Kamen Rider Den-O Super Climax Form
The next item from S.H. Figuarts is an expansion set of FX accessories for your Kamen Rider Fourza figure.
This set is a Tamashii Nation exclusive and includes a whirlwind effect for his Rocket Drill, an electrical effect for his Billy the Rod, an finally a flamethrower effect for his Hee-Hackgun.
" Rider Rocket Drill Kick!"
"Rider 10 Billion Volt Break!"
"Rider Exploding Shoot!"