I think I’ve given a cursory look at those a year or two ago. The main things I remember are that they are SMALL, and at least one model lacked a heated bed. The heated bed helps immensely with adhesion (will your print stick or just get dislodged, failing the job?) and the size is a practical constraint. For example resin printers can do exceptional quality items, but they’re going to be small. Pick a measuring tape of any kind, go measure a thing you’d like to make like maybe a pen holder or whatever you actually think you will want to print. I had a Monoprice Mini Select and it was a 12cm base, good for a lot, small for a lot. That thing can do a 10cm base. A quick visualization is that you will not squeeze a phone cover in that space!

This could be two things, aside from what you considered. Did you increase the speed? Because if I remember correctly the SV06 has a bit of a wimpy cooling system, and as opposed to the SV07, no extra fan on the back. Another thing to consider is that sometimes you just have a filament that is stringy, did you try a different one, or so far it’s your only option?