Freestylist vs widow std: which one has a lower wind range? Also trickwise, are there any that one can do better than the other?

What about the ul version?
I can compare the UL versions. Only have the WM std.
Both UL have excelent low wind abilities. The WM has about 2mph higher upper end wind range.
Both are very capable trick kites. Remember the kite does not do the tricks for free. You have to learn them.

As you are getting started in tricks, both will keep you learning for years. I fly based on what I am in the mood for, not which is better.
That said. If cost/value is the main issue go with the freestylist. years from now if you have outgrowned it you can sell it and move on to a more advanced kite.

If you wanted to buy only one UL kite to go from beginner to advanced flyer, the WM would be at the top of my list.