well i was thinking about getting 2 loop 720s. i was wondering if they were good or not
Yes.
will you give any detail why you like them and how often do i have to replace the string in the response
If it wasn’t a good yoyo, why would it be so popular and, well, why would YYF have ever made them? (This is just something I find annoying. Every yoyo made is good. No company would make a bad yoyo.)
I personally prefer my sunsets to my 720’s, but they are both great yoyos. String response doesn’t last nearly as long for me as most people claim it does. I had to change mine after about 3 weeks of looping. It was discolored, frayed, and not working as well at that point. That’s one of the major reasons I prefer my sunsets. They take far less maintenance, and perform very similarly.