I've not tried refurbished, though I assume it would be fine. Tek and Keysight make great gear. The advantage of the PC-based logic analyzer is in the ease of

I've not tried refurbished, though I assume it would be fine. Tek and Keysight make great gear. The advantage of the PC-based logic analyzer is in the ease of use, mostly in setup. Also in the number of channels, the ones built into scopes tend to be 16 channels. The two-screen thing is a bit of an issue, it would be better if Rigol's PC software for controlling the scope was halfway decent. Tek's software is much better.