I have the VHT Valvulator I Vacuum Tube Buffer + Power Supply and it will always be in line of my setup. It sounds like I'm plugged in directly to the amp. Even without any effects in line I can hear the difference. It helps to retain all the top end sparkle and signal strength. I can't recommend it enough.
I know all about that! My wife to be is from your fine country and we have CNN, MSNBC, CNBC on all the time. Our master plan is to live here for a few years, hope the US economy sorts itself out and then disappear out west somewhere.