I have had an SM-900 for probably twelve years or so and loved it, but lately it has had some issues (shutting down at random times) and I am afraid that it's days may be numbered. I am looking for a replacement recommendation, Some folks claim that the SWR sound since Fender bought them, isn't the same or is there some new smokin' amp out there that I should look into ? I don't want any more weight than the SM-900, but would love to keep the same wattage. I am driving two Schroeder cabinets 1212L and a 412L that are 4 ohms each. Let me hear from all the techies out there.