Ice Cream Makers

Cuisinart ICE-20 vs ICE-21 what’s the difference?

White Cuisinart ICE-21 Frozen Yogurt-Ice Cream & Sorbet MakerICE-21 vs ICE-20Cuisinart ICE-20 Frozen Yogurt-Ice Cream & Sorbet Maker

The Cuisinart ICE-21 is a newer version, it has the similar features as the ICE-20.
However, there are some design changes to the appearance and the mixing paddle.
According to users (people who own ICE-20 and ICE-21) reviews, the key difference between Cuisinart ICE-20 and ICE-21 is the paddle design. The manufacturer claim that the new mixing paddle design on ICE-21 makes processing time 25% faster.
An user also points out that only the freezer bowl are interchangeable, other parts are not interchangeable.

For the design difference and recipes, you can download the manual to get details:
Official Cuisinart ICE-21 manual download link:
Cuisinart ICE-20 manual:

Ice Cream Makers

Cuisinart ICE-21 vs ICE-30BC

Some difference between Cuisinart ice-21 and ice-30BC:
The ice-30BC is larger, holds up to 2 quarts that is 0.5 quarts more than ice-21.
The ice-21 is sold for $30 cheaper than the ice-30BC on
Design of the On/Off control is different.
Freezing Time on Cuisinart ICE-30BC is shorter.
The Mixing Arm is redesigned on ice-30BC, but it is small, only scrapes one side while instead of scraping both sides like the ICE-21, thus leaves more buildup on the sides.
The ice-21 produces less ice crystals.
ICE-30BC is noisier.

Compare Cuisinart ICE-30BC and Cuisinart ICE-21

 Cuisinart ICE-21Cuisinart ICE-30BC
White Cuisinart ICE-21 Frozen Yogurt-Ice Cream & Sorbet MakerWhite Cuisinart ICE-30BC Ice Cream Maker

Price$59.95 at on 2014-07-16$89.95 at on 2014-07-16
Capacityup to 1.5 quartsup to 2 quarts
On/Off ControlSwitchDial
Freezing Timebetween 16 hours and 24 hoursbetween 6 hours and 22 hours
Weightnot specified13.5 pounds
Dimensionsnot specified8.25" x 8.00" x 11.25"
Freezer BowlDouble Insulated Freezer BowlDouble Insulated Freezer Bowl
FeetNonslip Rubber FeetNonslip Rubber Feet
Cord StorageUnused cord can be stored into the base.Unused cord can be stored into the base.
WarrantyLimited 3-year warrantyLimited 3-year warranty
User ManualUser ManualUser Manual

Overall, according to users’ experience and reviews, the ICE-30BC is easier to use, but the ICE-21 makes better ice cream.