Ironically, if you want fine photos in an instant, you may need to use a machine from the past. The SX-70 was supposed to be a fun camera. I disagree about the quality of flash pictures. The new Platinum film is the best integral film yet. They've finally gotten reasonably good color saturation and an acceptably wide tonal scale.
Most people ignore the instructions and hold the camera incorrectly.
That way you can't possibly poke the bellows. The Sonar and SLR 680 lost the original SX-70's elegant compactness. Instead of the 680 or 690, I'd rather have the original, modified for 600 film, plus a compact flash unit that would snap into the Flashbar socket. But it won't happen. The SX-70 is the most outrageously clever invention of all time.