I waited to see if other, more knowledgeable, folks would come in here but it seems not, so ...
Yes, go for it! I have a double stacked Lunt 60 which I bought used from a fellow SGL member. He provided me with assurances about its capability and followed up with good advice on using it. Haven’t regretted my purchase and use it as often as I can.
Apart from my usual hesitancy over advising other people about how to spend their money I also held back because I don’t do imaging. I’m strictly visual and can’t comment on the Lunt 60 for imaging.
Previous to my present setup I had a Coronado SolarMax 40 which I thoroughly enjoyed using. In fact it was breathtaking! Great little scope which gave lovely views. But that was during solar maximum and it would have been difficult not to enjoy viewing in Ha ... 😎
I’ve also had three(!) Daystar Quarks. The first two - the second a replacement for the first - were bought new but didn’t perform well. These were bought during the time when Daystar were experiencing much publicised quality control problems and the retailer eventually pulled the plug on supplying them and refunded me. The third was bought used on this forum and, again, came with assurances regarding its capability. I thought it was a great piece of kit and, if you get a good one, you’d not be disappointed. I believe Daystar now have a better grip on quality.
The Quarks have a built in Barlow and you need to factor that in when choosing the scope you will be using. I have heard that some imagers favour the Quark but, as mentioned above, I can’t comment on that.
I moved on to the Lunt 60 and I’m happy with it. If you go ahead with the purchase you’ll expand your horizon on ‘the bright side’ and, also, now might be a good time as Solar Cycle 25 seems to be picking up.
I hope this has been of some help. Happy hunting, have fun on the research path/learning curve and I wish you the best of luck.