I believe that all senior Users here will suggest to you to put aside SPSS, XLSTAT and the like, and to switch to R. I can bet on this.....
I do not wish to express any judgement (positive or negative) about R, since my knowledge of it is barely not existent, and I am moving my first steps into R in these very days.
As for commercial packages, I have rarely made use of SPSS and I do not like it too much. It seems to me cumbersome and to much demanding on PC resources.
I frequently use XLSTAT. I like it because:
a) it comes as an Excel add-in;
b) if you have the need to manipulate the data directly in the spreadsheet, it is what XLSTA allows you to do;
c) it is fairly complete as far as the types of analysis are concerned.
I could suggest you to take into consideration Statsoft STATISTICA. It is a very powerful tool, with great graphic capabilities. I do not like to much its multivariate analysis module (e.g., Correspondence Analysis, Multidimensional scaling). So, if you are interested in e.g. Correspondence Analysis or the like (as I can imagine since your are in market research), I would suggest to take into account XLSTAT.
Finally, I like the version 16 of Minitab. What I like much is the statistical advisor, and the way in which many results of hypothesis tests are reported, with a clear explanation of the details. This turns to be useful for people with a non extensive stat background.
I hope not to have confused things too much.
I would take into consideration to use both Statistica and XLSTAT. The latter could be the right choice if something like Correspondence Analysis is essential for your purposes.