If I lived in Scotland, I'd vote for the Scots Nats.
It seems that there is a majority in the UK who would like to leave the EU and join EFTA and if their is a majority in England to do that (and remember the people living in England make up 84% of the population of the UK) then it is only fair, that those 84% shouldn't deny the 8.5% of the UK population living in Scotland from determining their own futures.
A landslide for the Scots. Nats. will also stop Labour from winning a majority and in fact will almost certainly result in a hung-parliament. It's quite possible this will then lead to a ConUKIP pact, which will see an early referendum on leaving the EU and joining EFTA.
Also, it will mean the break up of the two large banking groups based in Scotland, which means we'll see the return of Lloyds Bank, The Halifax, National Westminster Bank, TSB, Yorkshire Bank and Williams & Glyns bank, back to England, with all the jobs that go with them.
Also, as the Scots. Nats. will drive out the nuclear submarines operations at Faslane and lead to the Royal Navy ship building being moved south, which in turn will mean an additional 40,000+ jobs in England (lost to Scotland obviously) and the current defence spending of £5,200,000,000 that Scotland enjoys being lost to England too.
Go Scots. Nats. I'm really looking forward to you doing well and sending all the banking, defence and aerospace jobs south of the border!