I've had my domain, email and hosting with NetworkSolutions for many years. My hosting presence has been minimal - just a one-pager with my resume and contact info. I use NetSol primarily for the domain and email.
I've had very few problems of any kind with them in terms of performance. Everything just works. I can count on one hand the number of times I've had to call them with technical problems, and they've generally been able to correct any problem promptly. From that aspect I've been very happy with them.
I did have one bad experience with support shortly after web.com bought them. I was clearly speaking to an outsourced team in another part of the world. In addition to the language barrier, their knowledge was lacking and their attitude was not good.
Earlier today I read many horror story reviews about how they've changed since being bought by Web.com, and it made me very nervous. But when I called to renew my service, I got the same quality, all-American support team I usually get. Perhaps the outsourcing occurs only during overnight hours (for American time zones). You may want to try reaching them during Eastern Time zone hours of 8am-10pm.
I recently discovered I'm way overpaying for domain registration, and I may switch to another registrar soon. However, sometimes it's worth the extra $ for the peace of mind and stability I've had with them. I don't want to invite trouble...
UPDATE: I spoke with customer service today because my email wasn't working. This was after renewing my domain and changing my service package to drop the hosting. The rep was able to see what the problem was in less than a minute and it was resolved in about 5 minutes.
I asked about the high domain cost, and she said I now qualify for their gold-level service (or something like that) and gave me a renewal for $9.99! It seems that if you want discounts, you need to call them and ask for it (which has been my exp. In the past too, but I had a 3-yr package and forgot about that).
I also asked about the horror stories I'd read about, and she said that when they were bought by web.com they set up an overseas call center for off-hours and holidays; however that did not work out (clearly) and now everything is handled from their 2 support centers in Pennsylvanis and Florida. I did notice that most of the bad reviews were 3-4 years old, which supports her story.
Given all this, I upped my rating to 5 stars, because I got a competitive price and am reassured that they're still providing the great support I've come to expect. And I'm glad I don't have to move my domain, because that could open up a whole new can of worms.
In summary, I highly recommend NetworkSolutions for domains and email. I don't have experience with them for web hosting, so I can't comment on that service.