When I go for a big plane it will be 100% scale and I can sit inside it.

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But for RC controlled planes I like anything smaller than 1.8 or 28cc which translates into <2m wingspan and <2m total lenght.</p>
Any bigger and I run into storage space problems, increasing the "hanger rash" which I would prefer to avoid on large scale models.
the cost is another unattractive aspect.
But my opinion on "When is it ok to go bigger?" is whenever you are comfortable with flying confidently everytime. There is no time to think about the cost of the bird.
I have decided to progress from 10e Electric through to .40 to 0.60, to 1.20 size glow before moving up to 28cc, >70" wingspan.
No particular reason other than cost and comfort.
Smaller planes are cheaper to replace, easier to transport and easier to repair. Large aircraft or more sensitive to proper repair work meaning after a crash you have to rebuild correctly sice they are built much closer to the lowest factor of safety (1) in the interest of performance.
In myhanger I would like to see
1 x Pilot Rc Extra 260 26%
1x Aero Model Giles 202 1.2
and many 04. to 0.6 size sport and scale flyers since these I'll spend most time with. Cheaper, quicker and easier to get into the air and they're just plain unadulterated fun!
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