As a disclaimer, I never really had much success getting the tones I wanted with a power amp and speaker setup or an FRFR.
As to whether they would be a better option depends upon your typical listening/playing position when using the FM3/FM9/Axe III. Most studio monitors are nearfield monitors, typically 3-6 feet away from your listening position. I sit in front of a computer when playing, recording or listening to music so nearfield monitors are ideal for my use case, I use them for all audio in my music room.
The Focal Alpha is their 'entry level' model but are a great quality monitor. A friend has a pair of Focal Twin 6 monitors which is the reason I looked into the brand but could not justify the cost. The Alpha 65's are incredible sounding with a depth and width to the audio that none of the monitors I tried had. I was pleasantly surprised at the similarity in sound between the Alpha 65 and the Twin 6. If the Evo Twin was available when looking, they would have likely been my choice.
When searching for monitors on my limited budget, I tried the JBL 305 and 308P (to 'sterile' and mid heavy), Yamaha HS7 and HS8 (Harsh highs, ear fatiguing), ADAM T7V (Didn't care for the ribbon tweeter). They were replacing a pair of Behringer B2030A's that were actually great monitors but I wanted an 'upgrade'. I would choose them over the JBL, Yamaha or Adam. If you're wanting an inexpensive set to try in order to see how well they work for you, I would highly recommend the Behringers. There are a few things they get right and those monitors are one of them.