I have tried a couple of Night Trains.
I owned an AC15C1 for a year and a half (just sold recently) and thought the Night Train might make a nice backup. I didn't care for the Night Train at all. If any kind of useable clean tones are on your radar, look elsewhere. Night Train is harsh and gritty, never really cleans all the way up, not a lot of definition, pretty weird. Kind of clang and mush at the same time.
The AC15C1 (I clipped the bright caps out of mine, and put some really nice glass in it) by contrast had great cleans, and MUCH nicer breakup tones. Very sweet. Reverb kind of sucks, but that's my only gripe. I hauled it all over the country on the road, and gigged the hell out of it at home as my main amp for most of the time I owned it. If I hadn't bought the Mesa I totally fell in love with I'd definitely still have it. Never did buy a Night Train.
Downside to the AC15C1 is the weight. I have no idea why a 15 watt 1X12 combo built with the parts they use needs to weigh 50 pounds +, but there is simply no excuse for it. It's ridiculous. I may be one of the only people in history who switched to Mesa Boogie and had my load in get LIGHTER.
If you're looking at lunchbox heads to save room and weight, and still sound great, I would look past the Night Train, and check out the Tweaker 15. In addition to the formidable tweakability built right in, you can also run this head on ANY octal power tubes without bias or modification. You can swap tubes at will. It really makes this amp do just about anything. I run mine on E34L's and it kills.