Some measurement tips.
1. Measure the speaker at 1m (2m for a large tower) at the acoustic axis of the speaker i.e. between the drivers, such as the midpoint between the woofer and tweeter in a simple 2 way speaker. Depending on the measuring system used this should be done outside away from any surfaces so you get the true nature of the speaker. Something like TEF you could do inside since you can distinguish between room problems and the speaker. An RTA outside would be better.
2. measure the off axis response of the speaker (rotate the speaker it is easier than moving the mic.) at 15 degree increments up until 75 degrees. Knowing the off axis response will help you decide what type, if any acoustic treatments should be used to create a good soundstage, focus and envelopment. A good off axis response will have a similar response curve to the on axis measurement with slight roll of in the high frequencies. Of axis response is often different between horizontal and vertical. If possible do both but at least do horizontal.
3. To EQ correctly you need to determine what is causing the problem. Some things should be EQ'd and others shouldn't. This could be a topic on itself. But having good speaker measurements as a baseline will help make smart decisions. I wouldn't try to fix speaker anomalies with EQ.
4. If you are using more than 6 EQ filters per channel you are probably over EQing. Unless you are using them for wave shaping.
5. Rooms have a natural roll off starting at about 6-8khz where they will be down a few db by 20khz. I wouldn't fix this would EQ, it can make it sound unnatural although some prefer the add brightness.
6. I wouldn't boost much at all with EQ especially in the modal region below ~300hz.
7. Don't boost more than 3db you will make the amp/speakers work too hard and your probably EQing something you shouldn't.
8. Don't boost narrow dips.
9. Most of your EQ should be cuts.
10. 1/6 octave or better would allow more precision and be preferred for using parametric EQ.
Hope this helps. A good set up room with proper EQ will sound a lot better than any of the auto EQs with possibly the exception of Trinnov.