There's been some actual talk about economics on the thread today, so it's nice of Ipsos-MORI to come out with some polling comparing the two potential Chancellors today:
www.standard.co.uk/news/politics/uk-election-polls-sajid-javid-ahead-of-john-mcdonnell-in-poll-on-next-chancellor-a4280051.html
In news that will shock ... just one or two posters, the grumpy old Marxist John McDonnell loses to Sajid Javid by a margin of almost 2-to-1:
Voters prefer Chancellor Sajid Javid to Labour’s John McDonnell as the man to run the economy and set their taxes, an exclusive poll reveals today.
The senior Conservative is ahead of his Labour shadow in being seen as the most capable chancellor by 45 per cent to 24 per cent, the survey by Ipsos MORI for the Evening Standard found.
Only six in 10 Labour voters say they would pick their Treasury spokesman in a choice between the two. Mr Javid was backed by 86 per cent of Tory voters.
McDonnell losing 4 out of 10 Labour supporters? Now that raises a chuckle or two 
Many posters are however right that the public expects more public spending from the next Government, and having learned the lesson of 2017 (when the sainted Philip Hammond overruled any such thing), the Tories are ready to oblige:
Only 31 per cent want to keep spending the same level, and just 10 per cent think more cuts would be a good idea. Mr Javid has signalled he will water down the Treasury’s fiscal rules to allow more borrowing.