Decision between PhD in Computer Science vs Information Systems

[mmacha]

Hi all,

        I am reaching out to this forum for some help and I would appreciate any comments on my situation. Finally, after a tiring application process, I managed to get into a bunch of schools. I applied to both Computer Science and Information Systems PhD programs. My research interests broadly lie in data mining, statistical modelling of data and applied machine learning. 

I have heard back from most of the schools I applied to and I currently have offers from the following. 

1. PhD in Information Systems and Management from top 3 school - One Professor helped me during the entire process and he was definitely the reason I got in. 
2. PhD in Computer Science from top 15 school. Multiple Professors have stated interest in me. I have scheduled calls with them and will be talking to them over the next week.
3. PhD in Computer Science from top 30 school. Multiple Professors have stated interest in me. I have scheduled calls with few of them over the next week.
4. PhD in Computer Science from a Canadian school. One Professor who works in recommender systems wants me to definitely join his lab. 
5. PhD in Computer Science from top 100 school Not considering this due to better options.

I am yet to hear back from a couple of universities where I interviewed. I am assuming both of them to be rejects. The financial aid from all of the above universities is pretty good from what I heard from my colleagues studying there. I have more or less boiled down my choices to the first three schools ( 1,2,3 ). The prospect of the top 3 school seems too tempting but I am not so sure about the research problems my POI is currently working on and I feel they are too applied. Also, I am afraid I will not be taking enough Computer Science courses which would help me in future prospects. I have been contacted by Professors from schools 2 and 3 whose research is more interesting to me than the top school Professor. I am not sure after the help that my Professor has done in getting me into the PhD program, it would be ethical to talk to other Professors at that school whose research interests me more. I am fairly comfortable with the locations of choices of all the schools. I wanted to ask if there are any comments that the members of this group would give me to better tackle the situation, cause honestly, I am clueless

Thanks for reading. Any help would be hugely appreciated

 

 

[emmm]

Would you be able to take the CS classes at school 1 that you think would set you up for your future goals? Or would you be required to stop taking classes once your program requirements are completed? Would you be able to have more than one advisor and do a project in collaboration with someone from CS? I think it is important to work on a project for which you have a lot of enthusiasm. If you go to school 1, will you regret not being in a CS program? That's sort of the impression I am getting (plus it looks like you applied to mostly CS programs).