I highly recommend the M9 from Line 6. This is a relatively new pedal and it really does the trick. Full of effects and very user friendly. The problem that you have with many effects units is that there are so many menus and complicated routes to get to where you can use a simple sound. I think the M13 and M9 units from Line 6 really do a great job or making effects pedals that sound great and don't have all the bells and whistles that most of us never use.

I feel this unit is very adequate for beginners and professionals. I believe you can get one for around $399 but I am sure if you look hard enough you can find one for much cheaper. Here are some links pertaining to the pedal. Good luck.


Online Tutorial:
http://www.youtube.com/watch?v=tpOwSGAZawA

Description from Line 6:
http://line6.com/m9/