So here’s a dilemma. You need a lot of visits and conversions to do A/B testing and find winning page designs/texts quickly (in reasonable time, say a couple of weeks). But the only way to do that is to bid on high-volume broad keywords which, in turn, will inevitably lower your conversion rate simply because you use a broad or phrase match instead of the exact one.

When you use an exact match though you don’t get as many visits and clicks as you need for testing.