Any opinion please!...
That's really something to ponder about. Hypothetically, if that were to happen, all other coins should disappear as bitcoin is the influential entity here. But My advice is for you to steer clear of cryptos that are directly influenced by bitcoin. An example of such is XRP, this coin has been gaining some traction lately and seems not to be heavily influenced by the dip in the market. Still, the future of cryptocurrency lies in the fate of a few relevant projects, some of which are currently in their ICO stages or are yet to launch their token sale.
I'd pick Modern Finance Chain (MFX) as an alternative over any of the current crypto payment systems on the market now. Their platform has been built to make up for the lapses other systems currently face and they have unique incentive systems that will help retain merchants and customers. Apart from that, adopter can rely on the ROI from the masternodes which is highly competitive. Go on and visit their website and DYOR.