After years of paying for GW and Armory primers... both with mixed results (one can to another was just too inconsistant for my likings), I finally started shopping around. The results?
As fluffy said, Duplicolor Sandable Primer which is available at many U.S. retailers is a great product. I use their Gray Hot Rod Primer for anything that I used to use a black primer for. Smooth coverage. slightly satin finish. Great coverage. NEVER any overspray problems. Lasts long, and paint sticks like a champ. I\'ve even used this primer on flexible plastic models like those found in Descent or Last Night On Earth and it still stays on the model well.
Another great find is Rust-Oleum Automobile Primer. Most automotive stores in the U.S. (Kragen, Autozone, etc.) carry it, and again this one has all the benefits of the primer listed above. One thing I like about the Rust-Oleum is it\'s totally matte.
Both of these brand run right around $3 per large 12oz. can. A steal of deal compared to GW, P3, and Armoury. Also, I live in an area with extreme temperature fluctuations. Rust-Oleum and Duplicolor have never shown any signs of trouble with the temperature. I have even tried the spray on highlight effects (primer black then mist with white from above to set your highlight surfaces) with these cans and had excellent results.
To sum up. Lower cost, better more consistant results, and they\'re always in stock at multiple stores. I can\'t imagine ever going back to game company primers. If you are skeptical, go buy a can for $3 and if you don\'t like it... you\'re out only $3. But I believe that once you try these out, you\'ll be pleasently suprised at the results and money you\'ve saved.
pez Out.
P.S. Not to sound like a jerk or anything, but look at the kind of results fluffy and Einion are getting using these products. Seriously, how can you argue with that!?