I used to work with the ADC-212/3 (old company). Now I need a new oscilloscope. The 212-3 worked great for my needs. But, being old technology hardware, are you keeping it around or should I go for something in the 2000 or 3000 series? The 2203-2205 all have better specs than the 212/3 except resolution. Is that a problem? Also, is no external trigger a problem? (I can operate these things but have no idea about any of this techy stuff). I get 2 channel signals from a laser diode and a load cell.