What are the differences between the Sage programmes Instant Accounts and 50 Accounts

We have client who is not sure which type of Sage accounts to buy. Does he buy Sage, Instant accounts, Instant Plus, 50 Accounts, 50 Accounts Plus or Professional?

He wants to know what the differences are between these different programmes.As I understand it Instant Accounts handles Sales, Purchases and Nominal Ledgers, bank reconciliations, VAT (including cash accounting, but not flat rate), produces sales invoices, Profit and Loss accounts and balance sheets for any number of continuous months, in the year, up to 12. Instant Accounts Plus adds access rights and user passwords, basic stock functions, basic discounting on sales invoices, basic departments (P & L and balance sheet current month and YTD), a 2 user version, 50 accounts adds multi user versions, better stock, cash flow planner, multi company, better departments. None of these have foreign currency transactions. I think you need 50 Accounts Professional for this.Which is the latest version number for them? I think that 50 Accounts, 50 Accounts Plus and 50 Accounts Professional are on version 17 2011 which has recently been released. I cannot find any reference to version 17 of Instant Accounts or Instant Accounts plus, is it still on version 16?Am I correct, if not, what is the correct position?