thoughts on air ride suspension??

hey

i was looking at the RMS front K-member, with all the goodies(tubbed A-arms, sway bar, disc brakes.....)

then i saw a air ride option for an extra 500 bucks

Pro's and con's???

thanks

https://www.reillymotorsports.com/store/product.php?productid=16161&cat=255&page=1