do i need one yet

i am talking about a new clutch. i have noticed that the acceleration or grip in gears that i get is decreasing. when i first got my car at 86000 miles i could dump the clutch going into second and chirp my tires and throw stuff out of my center console in the dash, now with 104000 i am noticing that i can not get a chirp ever and it goes into the gear smoothly. as far as a i know it is the original clutch. do i probably need to get a new one? if i do, what kind would you suggest to get, i drive my car every day to school and to work, i dont want one that is for full racing, i would like one that is maybe a little better than the oem. if you could also give me a price range that i would be paying and some name brands and websites to look at and learn about clutches. my other question is also, if i were to get my clutch installed at some shop, how much would it cost and how long would it take. also, how long is the break in period. thanks in advance for any replies.