Start well below the headline size. These are accurate casts of performers chosen for being unusually large. The 9 and 10 inch molds are already at the top of what most people use comfortably. Brickzilla and Dredd are collector and fantasy pieces for the large majority of buyers, and there is nothing wrong with that as long as you buy them knowing it.
Girth beats length for difficulty. Girthmasterr at 8.5 inches is harder to take than several of the 10 inch molds, because circumference is the limiting number. Read the width first, every time.
FIRMSKYN holds shape, ULTRASKYN gives. FIRMSKYN keeps its structure under pressure, which some people want and others find unforgiving. ULTRASKYN is softer and more skin-like but flexes more at length. Mr. Marcus is the FIRMSKYN option here.
Vac-U-Lock is a system, not just a suction cup. Brickzilla and Girthmasterr take a removable cup and fit Doc Johnson's Vac-U-Lock harnesses, which is a different fitting from a standard O-ring. Check the base on the individual product page before pairing anything with a harness you already own.
Water based lube only. These are not silicone, but silicone lube still breaks a real-feel blend down over time, and at these sizes you will be using a lot of it. Water based is the only safe choice, and buy the bigger bottle.
Porous means a condom when shared, and powder always. ULTRASKYN and FIRMSKYN cannot be sterilized. Rinse with a toy cleaner, dry completely, then dust with a renewing powder to keep the surface from going tacky.
