Is the front Progressive springs upgrade worth it?

[Twism86]

I currently use 15wt with my progressives. It's probably time for fresh fluid anyway so what diff if any will I notice with 20wt?

[alexp]

Sorry for bumping an old thread. but if i get progressives do i need different length spacers? or do they come in the kit? Thanks 

[adidasguy]

Kits come with (usually) plastic spacer tube that you cut to proper length. Instructions included with the springs.