for scoring high Mark's use of Prabodh or navbodh parksha saar is usefull
Both are good. Basically it depends on you the way you are going to make it worth for yourself. If you dedicatedly study from any of those, you can score well and there are many who complete both as well. So try to be the second person. Or doing only 1 but thoroughly will also help.
Thankyoj.
CGBSE Class 10 Sample Papers
Free CGBSE Class 10 Sample Papers