Do you want plans or do you want planes? If you want Plans go to www.rcmmagazine.com
Go thru there plans section or order there plans catolog.
Model Aviation at www.modelaircraft.org Has a good plans section as well. Both have a lot of models to choose from if you want plans.
Model Airplane News has a good collection as well. A lot of .40 sized plans are available thru these places.
If you want a plane pick up a few of the magazines and got thru them. Plenty of places to get ARF's and kits! [&:]