Thanks for your interest in sewing machines! Based on the search results, I think the Singer S0105 Overlocker for R7789 or the similar Singer model for R7150 would be great options for you. Both are specifically for overlocking/serging and come highly recommended by Singer, a trusted brand. Let me know if you need any other details on those models or have additional questions! I'm still learning so my search results may not include everything, but I'm happy to help narrow it down from what's here.
Here are a few great overlocker/serger options for you: I would highly recommend the Singer S0105 Overlocker for R7789 or the similar Singer model for R7150. Singer is a trusted and reliable brand, so you can be confident these machines will give you years of use. Both are specifically designed for overlocking/serging stitches, which is great for finishing and reinforcing seams on fabrics. They'll allow you to make professional-looking finishes on your projects. Let me know if you have any other questions!