I'm from BC canada and new to Mesa .I play in my house and can be as loud as my ears can stand the volume . I just traded a Recto 2:100 amp[got it in a deal didn't need that power] at a music store and came home with a used Express 5:50 1x12 combo which I liked alot until I started hearing a noise with power chords , best described as a set of keys on top of the amp buzzing as the sound of the chord starts to fade .If someone knows a fix please let me know because I'm planning to bring it back by Saturday and replace it with a 5:50 head or another combo. If I go for a Lonestar head [1000.00 more or 1300.00 more with a combo] will I run into the same problems .I'm in the car business and "hand made" usually translates into "unreliable". I've been told that most mesa's go for repair at least once in the first 6 months, is this true? I'm willing to put up with some issues becaue I like the sound and the look of Mesa . So Head vs Combo less problems, better reliabilty [I already know about the weight difference by the time you can afford one your too old to lift it] Thanks...John T