Hey so i am pretty new to mountain biking and stuff but my friends are doing it and i think it is pretty fun. So i went on craglsist and bought this Mongoose SX 6.5. I think its like 15 years old or something. Anyways the shocks on it sucked so i found some used Rock Shox Psylo XC's and those seem better. So im wondering if my set up i have is any good or not. I ended up spending about 300$ in total on the bike and i dont know if i could have just gotten something better new for that price. Do you guys know if the Mongoose that i have is any good or if the Psylo's are any good? Cuase that would be stupid if it isn't very good and i will end up having to replace it when i get better in like 2 years.