The zen .50 can hover with the YS .63 and get out fast and furious or maybe a OS .61 FX make the job better.
DGrant put a picture from the tail of the zen 50 if you have
Today I see this plane Avance .46 from GLOBAL the spec:
cost $189.99
Wing Span: 57 Inches
Wing Area: 600 Square Inches
Overall Length: 55.5 Inches
Flying Weight: 5.25 -5.75
Wing Loading: 20.2-22.1
more info
http://www.hobbypeople.net/gallery/123818.asp