Greetings,
You can compare Swiss private accounts, including the cost of debit cards, using the unbiased moneyland.ch private account comparison.
In addition to costs, it is also important that service provided match your needs. For example, the PostFinance debit card is widely accepted within Switzerland - often by merchants who do not accept Maestro or V-Pay debit cards. However, ATMs and POS terminals in the Visa Plus network - used by the Postfinance card for transactions outside of Switzerland - may be less common than Maestro or V-Pay terminals in some countries.
If Maestro or V-Pay debit cards are more widely accepted in countries which you visit, just select the "Maestro card" or "V-Pay card" filters under "Services" to limit comparison results.
Best regards from Moneyguru