Articleship- is tax better?

I am currently pursuing my internship in a big 4 and my LOS is audit. While it is a wonderful opportunity to learn, I have a problem with the erratic timings. In the initial days there may be no work and suddenly we are allocated a lot of work, mostly clerical in nature, and I reach home late. Also, dealing with the client and extracting information is another aspect I don't enjoy. I have heard that in tax the timings are relatively fixed and the work is more technical and interesting. I want to confirm whether in tax I will have more regular timings and will the amount of work be relatively less? Don't get me wrong, I don't mind working till 8 in the night as long as the timing is fixed.