The big can looked very promising and it did the job!  The whole GK set was primed within 20-25 minutes, with a smooth surface and strong adherence.  It has the strongest one, I should say. It takes some time to verify the right distance between the can spray and GK detail, and sometime you may get "grains", but in the end it's quite easy to use. The only disappointing thing is the price (about 10-12 USD/can) and it's volume (180ml) against the consumption, but the last one can be reduced if you pour the can off and use the primer in your airbrush. Be careful and read the respective manuals before that!  By the way, you do not have to thin it for the airbrush.


The third one - Motip primer (white) was not good either.

I read about the colleague's nice experience and decided to save some money.  So, I went to the nearest shop selling the car cosmetic and bought the huuuge (+25% free) can for 6 USD only.  It looked fine and it seemed to work fine, but it caused my favorite Mr.Color and Gaia paint peeled off.  Not again... huh? From the other side it had no troubles with Folkart acrylic, so I can not say it's 100% bad.  Still no.  I returned to the pricey Tamiya.


My fourth and favorite is Gaianotes EVO.

I love the stuff, cause it has a variety of colors and you can pick up the one, close to the next paint layer. Gives you very thin layer, the smooth surface and does not hide any small details. It should be thinned approx 1(primer):2(thinner) with Gaia T-07. The adherence is average, but it should be fine unless you furiously scratch and rub the model.  However, EVO is quite hard to find - you can buy it in some internet shops.  Costs are about 7-8 USD per bottle (without shipping).