Cosmin - Best is to subjective word but yes - for me it usually works best in most cases. Of course there is nothing for free here. The cost is extra amount of bass. If You choose this position You might like the treble and middle balance but there will be low freq boost at very uncomfortable level. You won't feel it that much in front of the amp, but You will get a lot of "boom" on the front speakers. These days P.A guys have advanced digital consoles and can easily handle this. But...If it's a cheap gig with analog console, it's built-in low filter might not handle the lows...
It this could work I would rather use condenser mic and a little preamp with just a HPF and LPF adjustable. That would completely do the job for me. Many (even reasonably cheap) condenser mics have pretty flat response. We are used to guitar tones from our favorite recordings and it creates sort of distoretd image of how guitar should sound. Most of us don't like the tone of condenser mic for distorted guitars but....it doesn't boost the high mids I hate. You can easily get more natural tone just by plasing the mic directly in front of the coil and using just those two filters - LPF and HPF.
Only reasons I do not do this are:
1. Condenser mics tend to capture too much "noise around" If it's loud on stage, You probably get too much "bonus sounds" in Your guitar track
2. I usually play very quiet on stage. Even if it's loud, I like to have my guitar at the minimum possible volume level, so I will hear how it acts in whole mix. This way condenser mic will probably give way too much of percussion and bass...instead of a pure guitar signal
You are at GuitarMasterClass.net
Don't miss today's
free lick. Plus all our lessons are packed with
free content!
It's a big video studio belonging to some friends of mine and this is the setup for the Romanian PRS Experience - it's a little Youtube show I am working on to promote PRS in Romania. We have famous PRS users in Romania as guests in each episode and the first one will be aired at the end of this month 
