Brakes for 2010 Rockhopper SL

dubcat Posts: 747
edited July 7 in MTB buying advice

I have a 2010 Rockhopper SL hard tail. It hasn't been used for over 5 years and very little for the 5 before. It works great!

Alas, the right brake lever popped out of the reservoir (Tektro Auriga Pro) and I'm pretty sure a part has fallen off as it won't stay in there. Anyone know if this is repairable?

If not, which brake setup should I get for what I know is quite an old bike but which is still working fine for me? Shimano SLX? Deore? Something else? I mostly want to do cross country and road but when I lose some weight I will do some not-too-extreme single track.

2010 Specialized Rockhopper
2012 Bianchi Infinito