I find it is better to find the middle ground. There are often some "mid grade tools" that are plenty good for me and high quality. And I don't have the worry about something breaking or failing to perform.

I always figure if I was hiring a pro to do a task they would have good tools, so the first time I can get the good tool and be even money - the second time I have the tool and so I'm saving. (I also rent some tools, but that is for tasks that need an expensive tool I rarely use)