It depends on income, cost of living, loopholes, etc.
Washington has no income tax, but almost 8% sales tax. Sales tax is more damaging to lower income levels than higher, but higher levels will end up paying a higher overall dollar amount (since they spend more buying stuff).
A state like Oregon has no sales tax, just income tax. This is overall better for the lower income levels, though again, higher incomes pay a greater total dollar amount.
Most studies have supported that sales taxes are the least 'fair', and impact poor the most of any form of taxation.
The problem is having the two states border each other. People will work and live in Washington, but shop in Oregon. This creates a drain on both economies, though it allows a higher standard of living for the individual (provided they accept the redeuction in government services).