Sorry if I am not possibly answering your question, but can't you do both? Do you still have time to do another internship the following year? So if you choose

Sorry if I am not possibly answering your question, but can't you do both? Do you still have time to do another internship the following year? So if you choose to go with startup this summer then go for large companies next year, therefore you can decide better which one you want to pursue for your full time after you graduate.