When you choose an oscilloscope, you always need to make tradeoffs. But you also need to make sure you understand the claims made by competing oscilloscope vendors, so you do not unintentionally make a tradeoff that will adversely affect your measurement accuracy without buying you much advantage elsewhere. In February 2007, Tektronix introduced the DPO/DSA72004A oscilloscope, which Tektronix advertises as the world’s first 20 GHz real time oscilloscope. Tektronix argues that some measurements of today and tomorrow require at least 20 GHz of bandwidth and they have the only solution. This paper discusses bandwidth requirements of today and tomorrow, and explores tradeoffs that you make when purchasing the Tektronix oscilloscope over the Agilent 90000 Series oscilloscope.