Healthcare.gov is still a big POS and I even saw the government wasting money this weekend by running advertisements telling people to go there and sign up! Ehealthinsurance.com is incredibly simple to use and you don't even have to sign up and give them all of your personal information in order to get a quote. It took me less than 5 minutes to get quotes and to find plan details on ehealth vs 5 hours on healthcare.gov 2 weeks ago. And in the end I could only see prices with the govt website, I couldn't sort them or else the entire site would shutdown. It wouldn't even let me fully finish the process after 5 hours and 2 attempts.
The only difference that I saw between the two was that for some reason Blue Cross Blue of FL wasn't on the ehealthinsurance website, but it was on the healthcare.gov site. I can only imagine that this is because it's a state sponsored plan, not a commercial one. This is only speculation though and in the end it didn't matter because similar plans with the same price premiums were given for both sites.
In addition to this I could compare policies for this year and next year to see what the cost difference is going to be (more than double, but different policies). I could also plug in my income and members of my household to see if I got a subsidy from the government. It would also tell me how much my penalty would be if I didn't get health insurance at all.
In addition to health insurance though you can also get quotes on dental and vision, not to mention international and trip insurance if it's needed. I would highly recommend that you take a look at the site and see what sort of premium increase you'll get and also to see what you will have to get in case your employer cancels your insurance.