I own two Rigol oscilloscopes and have been using them since 2009. One of them is a 1052D, which has a 16 channel logic analyzer in addition to the standard oscilloscope functions. The other one is an 1102CA. They are very nice scopes and good value for the price. I especially like the displays, which have very wide viewing angle and can be seen from anywhere in the room. I use the math functions a lot, particularly the FFT and the differential. The logic analyzer work snicely, but I have only had to use it once, because we do most digital debugging with FPGA tools.