1) The Pricing
The #1 factor I love about KeyCDN would be, hands down, their pricing. If you have a small budget (like me) or if you have a corporate budget, both works great with KeyCDN with their "Pay as you GO" pricing. You only pay what you use for, instead of a monthly subscription payments. At the lowest price on the web of $0.04/GB; I made my mind up this was the company to stick with!
2) Expandable (Grows as your grow)
You only pay for what you use is extremely important when you start off small. You save money and only spend what is necessary. As I get more money in, I can afford to pay more money out.
3) Free SSL (Huge plus for me)
I love to see my https on my blog. Thanks for using Cloudflare and now KeyCDN, all of my site loads on the https protocol and it didn't cost me but pennies. I'm a firm believer that https should be the default for new websites being made. It makes sense, it's more secure, and it's just awesome.
4) Nobody can beat KeyCDN's current model
I can honestly say, after a week of researching and comparing prices and benefits with CDN companies, no one currently beats KeyCDN because of the benefits I've listed above. Pricing, Free SSD optimized servers, POP Edge Servers, Free SSL, and it's expandable. You can grow your CDN bandwidth with your business growth.
1) Limit of 5 zones for free
This is more of a neutral for me. When I compare the fact I get 5 zones for free from KeyCDN to other companies, I see it's more than what the competition is giving, but it's still a downer to me since I use multiple websites (over 10.) So it's not a huge deal but it's still worth mentioning. Extra zones over the limit 5 is $1 from your account balance every recurring month.
2) Not advertised enough
I honestly think KeyCDN could win over thousands if not millions of customers from other CDN companies just because they offer a better business model. I really think if KeyCDN was to start advertising campaigns that were modern and aimed towards webmasters around the web, they could get more business. So I dislike that it took me this long to find them. I would have joined them a long time ago if only I saw an ad earlier!
Give it a shot and you won't regret it!
I believe they still offer a free trial to new users without even needing your payment information. Once you implement it, you can see drastic speed improvements. I know I did! If you do have questions, give them an email and I'm sure they'll try to help you out best they can. I've had to email them a couple of times about questions, and typically got an answer back within 24 hours on business days.