Not quite "cheap", but great cleaning result. Compatible with all Oral-B sonic toothbrushes except

For many years I use electrical Zahbürsten by Oral-B and there are now lots of different brush heads to suit every need and taste, which are fortunately all compatible with all Oral-B brushes (except ultrasound).
Personally, I prefer doing the little round and rotating brush heads towards the elongated because they encircle better my feeling each individual tooth during brushing.

The CrossAction essays I did not know so far.
As the name suggests, are the different lengths of bristles "crosswise" out of the holder and to thereby enclose the tooth while brushing even better and thus completely particularly thoroughly clean.
Thoroughly clean they actually do and while cleaning themselves, I also really the subjective feeling that they thorough and expansive "scrub" than the other round Oral-B attachments, but a significant difference in the result, I can usually see or feel.
Only in the case of particularly stubborn fibers or other food particles between the teeth (for example, pineapple fibers or Maishäutchen) that I otherwise usually has to be removed with dental floss, you realize that the CrossAction actually creates more than other Oral-B attachments.
Whether one is worth the slightly higher price the repeated slight improvement compared to the slightly more favorable other Oral-B essays, of course everyone has to decide for himself, but I was convinced that CrossAction and I'll probably continue to buy.