I'm decided on these two brands. In Europe Glocks are cheaper than in the US so the price comparison will still be in favour of the TF but for $300 more I can get 250W more with the Glock. I actually plug my F BN5 in a GK700RB / Schroeder 1210(best thing ever made on earth!!!)setup. The 350W of the GK are allright but I'd like to have more power, as I play in a hard-rock band I sometimes have to really push the GK especially when giggin'...Hard to compete with a Marshall rig and a VHT pitbull Soldano halfstack... I know the 1210 can easily handle the affront caused by the guitar walls but the GK seems to be out of fuel. I read a lot of usefull things about the TFB550 and I really love the specs(looks like we can do whatever we want with this head) on the other hand I had the chance to play on a Glock Soul head and the sound was awesome. What do you guys think about this dilemna? I know I can't go wrong with any of these but if some of of you have had the chance to play both heads, I'd be pleased to know you opinion.