As good as iv got of anybody else, if you wanna send me your adress il send you one of mine but theres no need, i aint gonna lie to you, they are quality leaflets at a budget price.
A4 to a5 means less info though which means less well informed clients which means harder work clients, which means more wasted time which could mean less profit.
Im thinkong to go bigger to get the better clients, you sure you wanna take the risk?
smaller leaflets means cheaper costs which means you can spread your net wider, this means you will get more work, but its unlikely you will get the same quality.
Be carefull not to end up the busy fool just for the sake of saving £50 on printing costs

That said i use A6