for those who like the power beam...

[uabucks]

The PK core#6 is about the closest I have found.
http://i221.photobucket.com/albums/dd118/ubuckss/P9150006.jpg

Fairly easy transition between the two--the core has a little more
power.

 

[Michelangelo]

Never have chance to try the Power Beam, but really wonder whether or not the mechanism will get loose after regular use for years.