Primecoin is cool, but what does it offer over other crypto's ? I bought a few hundred last week but sold them all in favor of the UNOCS coins. True, UNOCS still has to deliver but I trust that it will. PXC, FTC and WDC are already hugely benefiting from each others area's of expertise
-PXC is the coin that will be used in entertainment like gambling and adult
-WDC is the coin that focuses on businesses
-FTC is a coin that focuses on every day use, and it has a very active grass-root community and genius marketing ( justabitoftime )
UNOCS Bridge is going to cause a revolution in the utility of the above three coins.
A little copy paste from the website unocs.com :
UNOCS Bridge is a secure gateway that allows local and online businesses the ability to accept crypto currency both seamlessly and instantaneously. With just a few clicks, businesses can access thousands of potential new customers and lower overhead costs resulting in higher profit. Our highly skilled team provides technical solutions for all applications from home businesses to large enterprises. Accepting crypto currency has never been easier.
Right after that PhenixEx will be launched, and a whole slew of other services will launch after that.
UNOCS is going to set the standard for other coins to follow. It will attract a lot of buyers outside of this community. Buyers that won't ask "what's the innovation this coin offers over Litecoin ?" but " How can I use this coin ?" and the answer will be; you'll be able to buy subscriptions to sites, use them as gambling chips and pay with them at site all over the internet, cheaply, in a simple way and instantaneously.
Most folks on this forum think to small, they think only of what they themselves value when comparing altcoins. The real difference in value will be dictated by what the mainstream crowd will use. Good times are ahead.
But to answer your question; no surprise here : invest in UNOCS and leave Primecoin as a fun coin to play with but not to pay with.