Big bores, on FS2

[Pedros20]

Hi guys

Been thinking of investing in some big bores for my FS2, would you guys running then say there a worth while investment? Been looking on petit & on here for setups, Cant help noticing that some people are running yokomo & losi springs, is this because there cheeper?
Will be running one more regional on astro, then carpet for the winter.
Whats your advice chaps?

Thanks in advance