there's a lot of invested interest in BTC. how would vcash XVC be able to replace it?
Vcash seems to be the only altcoin that actually has a vision and reason to exist in 10 years time. No other coins seem to care about the far off future.
This is total rubbish, unless you are only referring to Bitcoin clones.
NXT, NEM, Ethereum etc are all built with the future in mind...
With Ethereum, blockchain size and memory needed could eventually become a problem with regards to having many nodes controlled by many different people and it doesn't seem like it's built with those concerns in mind. Maybe they will consider it eventually, but ethereum isn't really built as a currency.
NXT - java and I don't think there's been much innovation on it since a couple of years ago, but I haven't been keeping up to be honest.
Don't know much about NEM, but can it send an unlimited number of transactions that are instantly confirmed? Just from the last post in the thread, it seems more trying to jump on the smart contract bandwagon than care about the future. Also, if your ISP sees you using port 7890, it knows you're using NEM, although, not necessarily what you're doing with it.
ISP's can block any ports if they suspect they are flooding traffic.
Anyway, its a good idea to look into NEM, quite a few seem to know very little, I wouldnt say it necessarily is the same as smart contracts, but can achieve similar results, just like NXT or even Bitshares for that matter.
The NEM developers have developed a private blockchain based on NEM for private use and its been successfully tested with huge amounts of transactions per hour on a level never seen before.
All this is currently going down in Japan, but its proving that the NEM blockchain is built to last and handle huge loads, nothing can make these same claims yet.
Check out the last few pages on the NEM thread and check out the NEM forum and mijin website for more info. (mijin is the private version of NEM essentially)
NXT can be written in C++ if need be and i believe there are other clients that are written in other languages like NXT solaris etc.
NXT has huge potential, they are working in implementing more features and development is still going on, but one of the main devs went on to start IOTA.