Internship IBM vs Intel

Hello! I got an internship offer from IBM System Z design group. I also have another offer from intel (verification group). I have no idea about how to compare these two companies! IBM System Z internship seems to be highly challenging and exciting! However same thing can be said for Intel also.

I would appreciate to get some feedback in this issue. Please help me with some advice/suggestion. In IBM, I will get the chance to work with their principal system z microprocessor designer. So, I am kinda leaning toward IBM and I like to work in design and architectural side. I need to make a tough decision here. Thanks in advance.