The Stiga Clipper CR (and CR WRB) is a great blade for developing players (and more!).
Lots of control, suitably fast. This blade has no weaknesses and can be used by defenders, blockers, hitters, spinners...
The drawback is that it does not shine in one particular aspect. For a pure topspinner / defender / blocker, other blades are likely better suited.
In particular, if you want power in your shots, it has to come from you, so over a whole tournament, this can be physically demanding.
The Stiga quality can be a bit hit and miss, and the weights can vary. Most good blades will be 90+ grammes.
The speed is sufficient, and the control is very good. Throw is medium.
The Clipper is a great blade, with a small price. Any player getting coaching should try one. It is the perfect blade to improve your game.
With the new ball, more advance players looking for power can consider a faster blade. Some Pros still play with Clipper but they are fitter than most league players.