DK2 OPG777 Stump Grinder
#7 in Walk-behindFull review
For a buyer who wants a known engine and the longest machine warranty in this price range. Depth is average.
Amazon $1,799$1,799
The DK2 OPG777 Stump Grinder is the better stump grinder overall, rated 3.8 to 3.5. The DK2 OPG777 Stump Grinder leads on features. The Digmight 15HP Stump Grinder wins on height or wheel and price. The Digmight 15HP Stump Grinder costs $400 less ($1,399 vs $1,799).
Digmight 15HP Stump Grinder
#12 in Walk-behindFull review
A budget 420cc grinder for tall stumps above ground. It is less suited to deep root removal, and the warranty is unclear.
Amazon $1,399$1,399
Prices were last checked November 3, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the DK2 OPG777 Stump Grinder for features (tow bar vs none of the three).
- Choose the Digmight 15HP Stump Grinder for height or wheel (20 in above grade vs 12 in above grade) and price ($1,399 vs $1,799).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every walk-behind stump grinder; a clear win is highlighted. How we rank explains each one.
| Factor weight | DK2 OPG777 Stump Grinder | Digmight 15HP Stump Grinder |
|---|---|---|
| Overall rating | 3.8/5 | 3.5/5 |
| Price 25% | 68 $1,799 | 84 $1,399 |
| Depth 20% | 60 9 in below grade | 56 8.8 in below grade |
| Height or wheel 10% | 50 12 in above grade | 100 20 in above grade |
| Power 10% | 100 429 cc engine | 96 420 cc engine |
| Teeth 10% | 62 9 teeth | 62 9 teeth |
| Features 15% | 35 tow bar | 0 none of the three |
| Warranty 10% | 100 3-year warranty | 0 warranty not published, scored as none |
Specifications
| DK2 OPG777 Stump Grinder | Digmight 15HP Stump Grinder | |
|---|---|---|
| Cutting | ||
| Type | Walk-behind | Walk-behind |
| Depth below grade | 9 in | 8.8 in |
| Height above grade | 12 in | 20 in |
| Cutter wheel | 12 in | 12 in |
| Teeth | 9 | 9 |
| Power | ||
| Engine | Kohler Command PRO CH440 | 420cc 4-stroke OHV |
| Displacement | 429 cc | 420 cc |
| Engine power | 14 hp | 15 hp |
| Electric start | No | No |
| Build | ||
| Tow bar | Yes | No |
| Weight | 231 lb | - |
| Warranty | 3 years | - |