Furthermore, the Testors kits are notorious for having very basic or non-existent detail. On the other hand, some Revell-Monogram, Fujimi, Hasegawa, etc. kits have great detail. Roden is making some fantastic planes in 1/72 scale.
My best advice is to do a web search for the particular model you're thinking of buying and see if there's a review of it. Otherwise, try the following web sites and see if you can find a kit you'd like to buy:
Scale Model Aircraft Kit Reviews -- This site has a fantastic, and huge, section of 1/72 scale reviews.
http://www.fortunecity.com/meltingpot/portland/971/home.htm
Hyperscale: http://www.hyperscale.com
Modeling Madness: http://www.modelingmadness.com
The Aircraft Resource Center: http://www.aircraftresourcecenter.com
Regards,
-Drew