1. They are relatively inexpensive compared to custom stainless steel devices, thus allowing one to wade into the MC pool to see if the waters fine before jumping in for a full swim. You may find MC is not for you. If so, you are not out a lot of money to find out and these devices are easily resold.
2. The plastic CB series will help to understand how a "trapped ball device"(TBD) works. It will also give you an idea where you stand with regard to base ring sizes. This info is a crucial starting point should you decide to begin the measuring process for a custom metal device.
3. You may be one of the lucky ones that finds the CB series perfect for you and your lifestyle.
The final recommendation is to make sure and buy from an authorized seller so you have a valid warranty should you have a problem with the device and you can also buy replacement parts and accessories. The manufacturer, AL Miller, can point you to an authorized retailer. There are a lot of knock offs out there, especially on Ebay.
What would other experienced wearers recommend for a first device for folks new to MC and why
