Both for me. If what I'm throwing is clearly not working, I'll definitely try different things until I find something that is. If I'm catching them good on something like a spinnerbait, I'll sometimes see if I can get them on a topwater if the conditions allow.

I don't have as much bass experience as most here, but for me, if something is catching fish, I'll keep using it until it stops working.  I'm not going to take the risk of angering the fishing gods.