Hi Jamatoma
First of all you must know that CIC does not care about whether you apply through a lawyer of by yourself; there is not a speed up on it, the immigration process takes the same time in both cases.
Now on the other hand, using an expert could help you on preventing that your documents being sent back to you due to some failures in writing and/or filling up… and of course, it will take much more for you to keep the process running. Since you have to amend the error(s) and send them to CIC once again (it could be a huge back and forward thing) actually it takes time that has to be added to the regular immigration process
So the expert(s) know perfectly how to fill the documents and they could advise you on the process so you can have more chances to perform better and at the end of the day the process may take less than applying by yourself ( of course if you apply by yourself and if you do all the fillings right at the first; it will be great so you can save the attorney’s fees… but if you feel that the processing is not your strength, I recommend you to hire the experts)
Bottom Line: the experts do not speed up CIC process but they could help doing the thinks at the first time and saving the delays due to documents rejections.
Good luck
Eduardo