Hmmm, not a lot of laser cut pattern kits in the 50/60 range here in the states. Maybe the Widebody 60 from CA models? Singapore Hobbies (
www.singahobby.com) carries some nice kits in this size range (MK, Pilot) - such as the Pilot Seduction and new MK Synergy with a 55" wing.
You could find an UltraSport 60 or perhaps a Kaos, if that interests you... or even a Sig Kobra/King Kobra series. I loved both my King Kobra and US 60.
I didn't have time to build this winter so I got a Venus with a OS 50SX... very nice. Especially for the money! Hope this helps.
Keep 'em flying...