Best shower silicon?

[atcla]

Hello all, I'm going to reseal my shower since it's leaking. Any ideas for the best silicon to use? I've also seen that some use a 3M marine sealant, I think 5200. Seems to be a super strong alternative to silicon! Thank you!

[TURBS]

Curious, what part is leaking?

TURBS
08 duramax tuned n modded
2011 32bhok Sabre
2015 camping "24 nights"

[Trevor43]

White Geocel 2300

[atcla]

It's leaking at the base where the frame meets the pan.