The Transalp falls into the weight range you describe. If your friend liked the A.T. then he'll like the 'Tranny' especially the new 650 which has a lower seat height. Plus they'd still have the Honda quality, reliabillity etc.
The 650GS is the perfect bike for the virtically challenged (the standard version not the 'Dakar' and will take and a small amount of luggage. Downside is it's difficult to extend tank range.
The Pegaso seems well made, has a low seat height. Not sure about parts availability though.
Personally I'd go for the 'Tranny' for two up as it's alot smoother.