I am not familiar with a Cub kit offered by
Dynaflite. However, I have built the 1/4 scale
Cub offered in kit form by Sig and also offered
in kit form by Balsa USA. Both the Sig and Balsa
USA kits are very good kits. The BUSA kit will
build you a Cub which is slightly more truer scale
than the Sig kit. On the other side of the coin,
and I'm not sure why, but the 1/4 scale Sig Cub
seemed to fly easier than the BUSA 1/4 scale
Cub. The BUSA Cub flies fine, but I was more
comfortable flying the Sig Cub. Take your pick.
I'm sure that there will be more opinions on these
two kits to follow.