Choose between a set, strand and powered model
Start with the differences that affect handling and care.
Choose which features you want to compare
A set gives you separate pieces to compare. A strand has several shapes joined into one piece. A powered model adds a motor and controls to the underlying shape. Compare those features separately so a mode count does not obscure what you will actually handle.
If you are considering a set, ask for a table with each piece’s dimensions. If you are considering a strand, ask which measurements describe its widest point and its total length. For either design, confirm that the product is made for anal use and has a flared base designed to remain outside.
Check which pieces actually differ
One set may change both size and shape across its pieces. Another may use the same shape at different sizes. Use the guide to reading a size set to compare the individual labels.
Check whether powered controls add useful features
Read which functions can be turned on and stopped independently. Look for the off action on the device itself, especially if a remote or app is included. Check separate charging or battery requirements before ordering.