There is no doubt the GG is a better DA and the lifetime warranty is IMO invaluable for those of us who only do this as a hobby, but I find it hard to believe you can put a kit together with the GG that is only $20 more all other things being equal.
Ok here's the break down of the kit GG vs. HF:
1
Griot’s Garage Random Orbital Perfect Starter Kit 169.99
1 LC-75-6PACK - 6 Qty 5 ½ x 7/8 Inch Lake Country Bevele 34.99
1 LC-43-125DA - 5 Inch D.A. Hook & Loop Flexible Backing 17.99
2 GG-3003 - Professional Grit Guard - Yellow 14.98
1 G-17216 - 15.2 oz. Meguiar's Ultimate Compound 10.99
1 AUCOUPON - 10% Discount -24.89
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Sub-Total: 224.05
Tax: 0.00
Shipping & Handling: 0.00
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TOTAL: 224.05
Harbor Freight Kit:
HF DA polisher - $65 w/ 1 year warranty
1 LC-75-6PACK - 6 Qty 5 ½ x 7/8 Inch Lake Country Bevele 34.99
1 LC Flat Pad - 3 Qty 5 ½ x 7/8 Inch Lake Country Bevele 20.97
1 LC-43-125DA - 5 Inch D.A. Hook & Loop Flexible Backing 17.99
2 GG-3003 - Professional Grit Guard - Yellow 14.98
1 G-17216 - 15.2 oz. Meguiar's Ultimate Compound 10.99
1
Wolfgang Pad Werks Pad Care Combo - $29.99
1
Supreme 530 Microfiber Towel, 16 x 16 inches 2 Qty. - 15.98
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Sub-Total: 210.89
Tax: 0.00
Shipping & Handling: 0.00
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TOTAL: 210.89
I try to match what GG kit have with the HF.