When you start, be like a young man on the dating scene for the first time.... play the field.
I tried pretty much the full spectrum. I developed a fondness for the Panama Geisha beans, Ethiopia, Kenya and Brazil beans. I tried a lot of the expensive "blue chip beans" (three types of Kona, Jamaica Blue Mountain, etc...) and I really liked them. But, in terms of bang for the buck, I would rather have 4 times the quantity of some other types of beans.
Tonight I am relaxing with a Rwanda bean. It has no amazing characteristics, but it is just a solid coffee. No matter what you find, every now and then you will want to "recalibrate" with a GOOD basic cup... It helps you appreciate some of the more exotic flavors which can be found in other beans.