For the last year or so I have stuck to power amps only with a Tone Hammer di Pedal as pre. However, lately I have been thinking of making a change back to a (small but powerful) integrated head... especially since I have been building a 3u amp case and realizing its not ideal for portability. The main reason I've been sticking to power amps is because of perceived reliability. If one half of the amp goes down I could always just use the other half. Plus with a power amp hooked up to a pedal sized preamp like the ToneHammer, its a pretty bullet proof rig. Yet, I have this nagging feeling I am just being overly paranoid about an integrated amp going down at a gig. That paranoia is limiting my options. So... am I just being overly paranoid? Just FYI the amps I am currently considering are the: markbass sd800 gk mb800 carvin b2000 I should note that I prefer big power... like no less than 800w at 4 ohms.