Specs that matter, specs that don't, and the customisations tour players actually make to stock frames.
There is a quiet promise underneath most tennis marketing: that the right racquet, the right string, the right setup is the thing standing between you and the player you could be.
The advice gets repeated in every corner of the internet where rackets are discussed: you do not need to pay for coaching.
Walk into almost any teaching program and you will hear a version of the same instruction: learn the continental grip first, or you will never serve, volley, or slice the way you should.
For most of the twentieth century, the assumption inside American tennis was straightforward: if you wanted to get better, you paid a pro.
A club player we know spent two weeks deciding between a Babolat Pure Aero 98 and a Wilson Blade 98 v9.
Here is a claim a lot of well-meaning parents have heard, sometimes from a club pro, sometimes from a YouTube video: teach the Eastern forehand grip and the full swing first, and the rest follows.