Invest money into a personal pension and basic rate tax relief will give it an immediate boost, growing every £800 to £1,000.
On top of this, as a higher rate taxpayer you can claim another £200 back on your end of year tax return. Money that goes back into your own pocket.
Even before any growth, you've invested £1,000 into your pension at a cost of just £600.
Other investments may take years to give such returns. With a pension they're guaranteed and upfront.
Of course, future governments can change tax laws, and may decide to increase or decrease the tax relief pension investors get in the future.