First off, Welcome to these forums and back to cubing
I have not yet tried the Weilong GTS 3M out, but from what I have heard I would say that it would be one of the top (if not the top) option.
Some other cubes that are really good and popular are
1. Qiyi Valk M
2. Qiyi Valk Power M - This one and #1 are both really nice and I use both as my mains. If you are looking for a cruncher, louder, crisp feel then #1 would be for you, but if you are looking for a more butterier, smooth, and soft feeling the #2 would be the best for you. This is only comparing options 1 and 2, just FYI.
3. Gans 356 Air SM This is a really nice and smooth feeling cube, but also have a nice bumpy feel with the magnets.
4. Gans 354 M - Based on reviews, Really good
5. Yuxin Little Magic M - For a budget cube this is one of the best cubes (Aolong with option #6). I know that a lot of people use it as there main and if I had one I would use it as well. This cube has a sharp and chrispy turning style and it is one of the only cubes that has that feeling (I think).
6. MF3RS2 M - See #5 Compared to the YLM it is much smoother and not as sharp of a turning style.
7. I have only tried the Angstrom Gans Air SM, but any cube by Angstrom is going to be really good, so definitely a top contender.
There are a few other cubes that are good, but the above are some of the best. If you are not certain on what you want then I would recommend that you go to some comps and try out a bunch of different cubes and see what fits you best. Or the other option is (if you have a lot of cash to blow) is to order several different cubes and try them all out on your own

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I hope that this helps some, but please ask more questions of you have them.