Personally I'd prefer to pay for myself for small expenses and become part of a collective for catastrophic expenses. IMO, anyone who thinks that interjecting government into the middle of healthcare is going to result in price or service improvements hasn't been paying a great deal of attention to what typically happens when government gets involved.
Who runs the collective, and decides which expenses are covered or not?
When you've got a kid whose finger has swelled to twice the normal size, how many different service providers are you planning on visiting before you pay someone, to make sure you get the best price?
Getting health care is very different from buying a TV, car, or home. Sometimes, minutes matter and the patients are not in the place to make calm, rational decisions. What typically happens when the free market dominates health care is that the health care is terrible.