IMO Saris = worst bike rack EVER.
No experience with the solo, but I have the Bones and I HATE HATE HATE it. I never really liked it to begin with as the whole thing feels cheap and the plastic ratchets are harder than they should be to operate and feel like they won't last long. I bought it a month ago because it has smaller arm width and I needed a smaller rack to fit the main triangle of my new bike. Last weekend was the first time I used it for a trip of more than 15 miles or so. Everything was mounted correctly, but one of the plastic arms rubbed a deep chip the size of a pencil eraser out of the paint job of my brand new gorgeous (expensive!) dream bike.
To say I am pi$#ed off would be the understatement of the century.
Currently, Saris's website's customer support page is throwing a javascript error when I try to access their "email us" link so I conveniently can't submit anything to them there. I referred back to the email they sent me when I registered the rack online, and the link that they gave me to email them in the event of a problem yields a 404 "Page Not Found." Convenient.
I guess other people like the rack but I will never buy anything they make again. I had a Thule Passage? hatch rack before this that was sturdier and never hurt my bikes. I'd have been perfectly happy to keep it except that the arm width was too big for the new bike.
Oh, and did I mention I hate the Saris rack?
Thanks for letting me vent.
2010 Pinarello FP7 / Specialized Toupe
2006 Specialized Ruby Comp / Specialized Toupe
2005 Trek Fuel EX8 / WTB Deva