Which one is better? Have experience with depron. Good and strong.How is coro? Is it better than depron ?

Both have their pros and cons.

Corro is stronger, but heavier.

Depron has the ssme strength in all directions.
Corro has different strength with the flutes and different strength against the flutes (so more planning is required while cutting corro)

Corro I feel is also more readily available and cheaper.

Personally I prefer Corro. If you want to see what all can be done with corro, check out Sanjay Sir's (sanjayrai55), KK Iyer Sir's, VC Sir's, vishalrao and samlikespad build logs on this forum.

If your plane is not so heavy and your AUW comes within 800grams prefer depron.
Above that go for Coroplast. I am in Luv with Coro after building this plane weighs nearly 2kg...

Thanks everyone.Making 1.2kg auw plane, so going with coroplast.