I have the original Spider 50 watt amp for a practice amp.
The nice thing is the sound achieved at low volume compared to the higher volume needed with Tube amps to really get the sound they are designed for.
Yes, the 50 watt amp will crank it up, but it also comes equipped with a volume knob. So, when you're home alone, you can get to know the neighbors (just be sure to play while looking out the window so you don't get to know the Cops as well).