All user reviews for the GFS Loudmouth Bridge

I bought this pickup some time ago to install it on an Epiphone Les Paul Standard.
I relied on various reviews praising this pickup...
So, yes, it's not bad, but nothing transcendental...Its sound lacks some balance. It becomes muddled, shrill pretty fast, which isn't what you expect from a supposedly "high gain" pickup. It's okay with clean and crunch sounds, but you can forget about it with OD or distortion...and I'm not talking about extreme gain levels. You need to fiddle with the mids and highs to improve things a bit, but even if you spend hours at it, it's far from being perfect. It bares no comparison to my standard reference, the Dimarzio Super Distortion, which is clean and sounds fine straight away!
A pity...I have the impression that the reputation of GFS pickups is a bit superficial. It's the second time I bought their products and the second time I've been disappointed. Their value for money is okay, but the sound quality has nothing to do with the big brands (Dimarzio, Seymour Duncan...)
They look great, they seem well built, but in the end, it's the sound that counts!
In short, I wouldn't buy it again.

Update from March 2014: I installed it on an ltd f10 (originally with an ESP single coil format humbucker at the neck and an ESP lh150 at the bridge) in order to have a very homogeneous sound (the original bridge was much more twangy-thin-vintage than the neck), and it's been a real success. This loudmouth is now on a guitar with the appropriate looks for its favorite sound style.

I've had it for a year, but my review is based only on the last months, after using it as bridge pickup on my lag imperator 100 (an incredible guitar).
Let's see what happens with the Loudmouth and a short-scale Gibson base with twang (warm enough and with quite some sustain)...
For once, it's up to the job.
The performance is rock-solid, clean, pretty compact, well-defined. No buzz or feedback issues, although I haven't driven it hard with a tube amp yet.
The pickup is set pretty close to the strings and it doesn't move, not even when attacking the (big stubby nylon 3mm) strings vigorously. The sound is not thin, but rather fat.
The output power is significant, but it can be easily handled clean (unsplit but with the neck pickup split) and the sound is even and stable, a real treat for fingerpicking.
For crunch sounds, it will depend on the overdrive you use, I recommend you a bright one, given the Loudmouth's not too brilliant character. But that's no the goal of the pickup, which is...
Hi-gain! It's perfect for that, solid and massive. The lack of brilliance observed with clean/crunch sounds is a huge advantage for hi-gain, harmonics come through fine.
I installed the push-pull split option, but it's not worth it, it's impeccable as is. Do note that anything is possible thanks to the 4 wires plus shielding, it can be coupled with any other pickup.
On three other guitars similar to the lag, I have the following pickups and here are the direct comparisons:

I compared them to the dimarzio dualsound, seymourduncan sh1, which have more brilliance and are cleaner for mid gain/solos, but they aren't that good with hi gain. Not the same school. Compared to the shadow sh680 and they are more similar, the sound of the gfs is fuller and more compact in the treble.
I don't know how much they cost new, nor where you can buy them, which is a pity for GFS, because I would gladly get more, considering this one is awesome and they have a pretty comprehensive catalog.
For what I paid, and their hi-gain performance, they deserve the best mark!