Griot's Garage G15
A 15 mm long-throw polisher at a mid-range price, for enthusiasts who want quick correction and a lifetime guarantee.
Amazon $249.99$249.99
The Griot's Garage G15 is the better dual action car polisher overall, rated 3.6 to 3.0. The Griot's Garage G15 leads on warranty and value. The FLEX FC3321 Brushless wins on features. The Griot's Garage G15 costs $249.01 less ($249.99 vs $499).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
FLEX FC3321 Brushless
A light, brushless 15 mm polisher for professionals who want the newest motor tech and can live with a one-year warranty.
Amazon $499$499
Which should you buy?
- Choose the Griot's Garage G15 for warranty (lifetime guarantee against defects vs 1-year warranty) and value ($249.99 vs $499).
- Choose the FLEX FC3321 Brushless for features (constant-speed electronics, brushless motor vs none of the listed features).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every corded long-throw dual action car polisher; a clear win is highlighted. How we rank explains each one.
| Factor weight | Griot's Garage G15 | FLEX FC3321 Brushless |
|---|---|---|
| Overall rating | 3.6/5 | 3.0/5 |
| Correction 30% | 62 15 mm orbit | 62 15 mm orbit |
| Value 25% | 49 $249.99 | 10 $499 |
| Warranty 15% | 100 lifetime guarantee against defects | 0 1-year warranty |
| Power 10% | 100 1,100 W | 100 1,200 W |
| Weight 10% | 50 weight not published (neutral score used) | 75 5 lb |
| Features 10% | 0 none of the listed features | 50 constant-speed electronics, brushless motor |
Specifications
| Griot's Garage G15 | FLEX FC3321 Brushless | |
|---|---|---|
| Polishing | ||
| Orbit diameter | 15 mm | 15 mm |
| Speed range | 3,000-5,300 OPM | 2,700-8,700 OPM |
| Backing plate | 5 in | 6 in |
| Forced rotation | No | No |
| Power | ||
| Power source | Corded | Corded |
| Motor rating | 1,100 W | 1,200 W |
| Cord | 10 ft, detachable | 19.7 ft |
| Brushless motor | Not listed | Yes |
| Controls | ||
| Constant-speed electronics | Not listed | Yes |
| Soft start | Not listed | Not listed |
| Lock-on trigger | Not listed | Not listed |
| Build | ||
| Weight | - | 5 lb |
| Pads or polish included | No | No |
| Warranty | Lifetime | 1 year |