FastSky,
I agree that stick are not the greatest looking planes around... But it's what they do not how they look.. Any stick is a very Versital design... They can fly fast, slow, pattern, 3D, fun fly, or sunday sport... Also since a stick doesn't have any compound curves it's easier to repair and recover.

Knight Magic,
I'd recomend that if you don't already have the bigstick to look at the Hanger 9 Ultra Sticks... They come in 40,60, and 1.20 size.. I just got the 1.20 myself(look at Ultra Stick Lite Build Review in ARF RTF forum) If your stuck on the big stick then your engine choice depends on a couple things..

Weight
Power
Cost
What you wanna do with the plane

Weight... I like to keep my planes as light as possible. Is the .61 much heavier thatn the 46?

Power... Is the power output diffrent enough to outweigh weight penalty?

Cost... Hoe Much are you willing to spend

What you wanna do with it... Do you plan on flying 3D or just a relaxing sunday type plane?

I'd recomend you look at Both the Hanger 9 Ultra Sticks and the Super tigre line of engines.

Dependingon the model you choose Super Tigre has a .51 .75 and .90 engine as well as a host of others that would be perfect in your model