alright. so i want a bike to commute around the city. i want one so i can bike to work. im becoming a senior next year so i plan to take this bike to college. i am stuck between a mt amd hybrid bike. which wiould you recommend? im buying off craigslist cause i saved my own money and dint hav much. also i read aboit maintenance?! i never knew bikes needed to be tuned. which bike is more reliable? any recommendations? please help 
thanks!
thanks!