I have investigated this, and it is almost certainly NOT the metal tabs at fault. http://www.youtube.com/watch?v=lypYZxIDBDs From: http://www.eevblog.com/2010/12/23/eevblog-135-kindle-case-mythbusting/ Investigations continue... Dave.

$2000 is a LOT to spend on a scope if you have to ask such a question. Depends on the specs you need, but I'd get a cheaper one and spend the rest of your money on some other gear. The Rigol DS1052E at $400 is by far the best bang-per-buck. I have a review of it, a teardown, and info on how to hack it to a 100MHz version here: http://www.eevblog.com/2010/03/31/eevblog-70-turn-your-rigol-ds1052e-oscilloscope-into-a-100mhz-ds1102e/ http://www.eevblog.com/2010/04/18/eevblog-77-rigol-ds1052e-ds1102e-oscilloscope-hack-update/ http://www.eevblog.com/2009/10/12/eevblog-37-rigol-ds1052e-oscilloscope-teardown/ http://www.eevblog.com/2009/07/19/eevblog-19-rigol-caught-with-their-pants-down/ http://www.eevblog.com/2009/04/05/eevblog-1-rigol-ds1052e-oscilloscope-reviwed/ I also compare PC based and bench oscilloscopes here: http://www.eevblog.com/2009/06/17/eevblog-13-part-1-of-2-digital-storage-oscilloscope-tutorial/ and http://www.eevblog.com/2009/06/17/eevblog-13-part-2-of-2-pc-based-digital-storage-oscilloscope-comparison/ There is no need to get a PC based oscilloscope unless you have a specific need for one. Regards Dave EEVblog