Building models for many years I have used many primers. Some good some not so good. Tamiya surface primer is by far the best primer I have used. The qualities of the primer include great surface coverage, fast dry time and ease of sanding. The primer will definitely show inaccuracies quickly once it is allowed to dry. Fixing these problems is a snap with how easily the primer sands. A top choice of primers to keep on hand.

I've been building models for over 45 years, and Tamiya primers have become my favorite as far as spray can primers are concerned. The Surface Primer and Fine Surface Primer cover well, spray on smooth, dry quickly, and sand like butter. Most importantly, the long term topcoat holdout is excellent. I've used these primers over all kinds of styrene and never had any issues with it attacking the material. I've used other brands that might have had slightly better filling properties, but its worth using a couple extra coats with the Tamiya products because they perform so well overall.

Decent price, good coverage without obscuring detail, and super easy to use. My go-to.