Your grinder choice will depend a lot on what kind of brewing system you use.
The better the grinder the less heat it will transfer to the beans when grinding, and the more consistently it will size the "fines" (the grains of ground coffee). Burr grinders, even inexpensive burr grinders, do a better job at these things than (far less expensive) blade (aka propellor) mills. Better burrs do a better job than worser burrs.
Different coffee brewing methods are more or less revealing about the quality of the grinding job. Because the grind is so coarse for "French-press" it doesn't matter at all and a blade grinder is plenty goode.
You seem to looking for a pour-over automatic. Almost all of them, especially those using gold screen baskets, tend to be very forgiving of a little inconsistency or even a little too much heat. You won't discern much difference between an entry level burr grinder and a propellor grinder -- and unless you've got a golden palate and are using very special beans you won't be able to discern any difference at all between an entry level and a higher priced burr grinder. The brewing method doesn't allow that kind of resolution.
As kokopuffs already said, better burr grinders are for espresso. As far as the Barzata he recommends you don't need to spend $150 to get good grinds. No criticism, because in addition to the method it's a good implimentation set in a quality machine.
You can get a burr grinder for less. For instance, a DeLonghi (~$35) or a Capresso (~$50) for instance. On the other hand, these aren't particularly well built and run so fast as to make too much heat.
In your shoes, I'd choose between something like the Solis (or a Barzata, or a KitchenAid, etc.) and a blade grinder and forget about Mr. In Between (the ultra-cheap burr grinders).
A word about
Home-Barista.com • Espresso Machine Reviews, Coffee Grinder Reviews, How-Tos and Discussion Forums -- it's all about high-end espresso. A typical home barista "noob" isn't someone thinking about buying a Rancilio Rocky grinder, but someone thinking about making a move up from a Rocky to something better. If that doesn't come close to describing you -- don't bother. You won't pick up much good information on sub $300 grinders or sub $1,000 makers.
On the other hand, coffee geek is certainly more mainstream but you'll have to be careful about separating bad advice from good.
Hope this helps,
BDL
What is a good burr grinder? 
