Yep, the $100 I blew on the Husco was one of the best investments I ever did on my car, though I found it very difficult to part with $100 for an armrest now I don't regret it one bit as it has paid for itself in increasing the comfort level in my car threefold.

Last Christmas I bought a armrest/12V cooler/warmer at Target on clearence for $5. I would suggest getting some dimensions as to what would be a comfortable level for you and work from there but I think that the armrest/cooler may just be the ticket. Mine's down at my other house right now so I don't have access to it so I can't snap some pics for you to give you an idea for what to look for. I'll grab it when I swing by there later today.

'00 Insight "Wazabi" -75,000+ miles
'03 Toyota Matrix - 81,000+ miles
'03 HCH-CVT-OSBM-41,000+ miles (retired 04-10-06)
"I'm very secure with my little Insight, no Prius envy here."