Don't know anything about Line 6, some like 'em some don't. The two I heard onstage last year (same band, both guitar players used identical Line 6 1x12 combo rigs) sounded ok but nothing to write home about.
I basically have two rules when looking at amps.
1. 30-50 watts is about all I need.
2. Look in back. If I don't see a full set of TUBES, I move on to the next amp.
Seriously, if it's not a tube amp I never even turn it on. That's why my practice amp is a 70's Fender Champ. I own one solid state, a RMS practice amp that mostly just collects dust, I use it now and then since it does have a decent distortion channel, but for every time I turn it on the Champ gets used at least 35 times. Usually I hook both to the A/B switch and use it for distortion while the Champ is for clean at low volume. Usually I just don't bother and run the Champ.
For onstage use, it's tubes only, I don't even consider solid state.
So...is the Line 6 you're looking at a tube amp? If so, play it...listen to it. That's the only way you can know if it will suit you. If it's solid state, that's your call, I wouldn't even turn it on so I wouldn't have a clue what it sounds like unless I saw someone else using one onstage.
But that's just me, a friend with a Peavey Butcher gave me the tube bug years ago, since then I've never seen a solid state amp that will give me the tone a tube amp will, especially at stage volume. Cranked loud enough for a band every solid state amp I played years ago got muddy and lost most of it's bass, didn't cut through the mix and usually started clipping, which is harsh and unacceptable. The frustration ended when I got my tube amps I currently still use.
That's my take on amps in general, no matter whose name is on the label, my first question is...does it have tubes? If the answer is yes, then I find out what it sounds like and what wattage. If the answer is no, I keep looking.