I own a Forte, a Subway D-800 and a Puma 500, which is obviously not the 900, but I can make some observations. The Forte just kills with my Berg CN-112 pair. The cabs sounded great with both other heads, but the Berg+Berg pairing is off the hook. It is a simple, very clean amp, and experimenting with the VRC (compressor) is where the magic is, at least for me. I would agree that I like the form factor better on the other two amps. The Subway is indeed a little warmer/darker than the other two, and it is built like a tank, which I love. I pair it with a Subway 15, and the results are terrific; it is my "one cab" gig rig. The Tecamp is also super clean, and the "Taste" knob is a brilliant tone shaping tool. The 500 has no fan, and I agree that the 900 will be happier with the fan, since I managed to put the 500 into protection (no sound) a couple times, but that was with a band that likes to play way too loud. All 3 of these are high quality amplifiers that have run without any problems whatsoever for me. I did not have the same reliability with G-K, having owned both an MB-500 Fusion and an MB-800, although those were both bought used, while the ones I am discussing were all new. I think the most important factor tone-wise is the match between the amp and the cabs, and I have not played a Fearful, so I cannot comment that way. My gut feeling is that the Forte is super impressive sounding and very powerful, and it would be hard to make a mistake buying one. The resale value is likely to be better than the Puma. Good luck!
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