I don’t have any experience with the scope you have been recommended. However, I do have a skywatcher explorer 130p on a goto az gti mount. It’s an excellent scope, but it’s a little more than the set up you’ve been recommended, I’m not sure how they compare but I’d guess the optics are broadly the same.
Just last week I purchased a second scope, a skywatcher 8 inch DOB. This is roughly the same price as the nexstar, but the scope itself is, in my opinion, far superior to the explorer 130.
I think it all depends on what you want to a look at. If it’s the planets and moon, or if your happy to learn to find deep space objects manually, I personally don’t see the need for a goto set up and would punt for a DOB. However, if you’re interested in deep space objects and aren’t confident in locating them manually, or simply don’t want to, the goto mounts are excellent.
I’m using my goto set up as a guide scope for the DOB.