For comparison with other 'Guitar':
I used to have, as an old Kiss fan, a Gene Simmons - Axe Guitar. That thing is still undefeated, simply because it is significantly larger than the other controller, to me personally the pressure points of the buttons were simply better and the thing is just incredibly cool. :-)
Unfortunately, the good part due to its own debt broke down. But also costs evenly times approx 100 euros, which is a slight insolence, so I looked around for an alternative, because you unfortunately the Guitar Hero controller can not use the first Rock Band game. That leaves the choice between Band Hero controllers, which in turn often can not be used the other way or just a new combined solution.
The SFG Guitar is not only by far cheaper than most others, it is almost as good processed.
The buttons can be super easy to press, give no disturbing Geklacker of itself, not as the hakeln of Speedlink (at least the cheap) and needs as opposed to Gene Simmons guitar not 4 but only 2 batteries. It is also completely black, which is always very stylish. Because of the non-existent Wii Mote you need not fiddle around a long time and the stylish black is not broken by a white block.
The only drawback - and that's not really enough to deduct a star for me - is the size. The SFG is for my taste a bit too light and could also be a little bit to be greater, but let's be honest: It's not a guitar, which is a toy. And in this context I can only recommend a good piece.