Endless threads on here.
The best advice is try everything you can, preferably on your usual trails, not just round a car park. It’s your bike and your hard earned cash.
I tested 4 very different bikes for at least 2 days each, including a 29er, before I bought my 26er Cotic Rocket. For me a 29er didn’t add up, but there will be plenty along to tell you otherwise 😀