I have used an overpriced Great Stuff Pro pistol and a cheap one (ARTISTORE brand). This one, the Foamnseal FNS 500, is definitely my favorite. The coating on it is really non-stick. None of the other pistols had anything like this, although the cheap one claimed to have one. I can rest assured that this will remain sealed for >30 days, saving a lot of money, time and frustration. I used a can or two of cleaner on the previous two guns because I couldn't trust them to stay sealed for more than a few days. I threw away the cheap one the first time it allowed the foam in the gun to set after a few weeks of inactivity. And I'm throwing away Great Stuff Pro now that I have this one. It's just not worth the cost and hassle of cleaning a gun when there's an alternative to almost never doing it for less than $30.
Gorilla Tough And Wide Silver Duct Tape, 2.88" X 25Yd - Pack Of 1 For Superior Strength And Durability
23 Review
Transparent Cross Strapping Tape: XFasten Filament Duct Tape 2X30 Yards - 3 Pack
29 Review
High Tensile Strength Duct Tape Silver, 5.8mils, 2 Inches x 50 Yards - All-Weather Duct Repair Tape for Commercial Use, Heavy-Duty Repair, Packing with Temperature and Shear Stress Resistance - XFasten
39 Review
XFasten Super Strong Duct Tape, White, 2" X 50 Yards Waterproof Duct Tape For Outdoor, Indoor, School And Industrial Use
33 Review