For me, I'm never really sure how to gage a beer prior to tasting. I don't understand the whole IBU thing or anything really about the chemistry of beer. And if I did, how it would suit me. Though I know what ABV means, I never know whether or not it will be an indicator as to whether or not I'll like or can even stomach the beer. Hey, I can easily drink scotch straight up so there's definitely something more to it for me. Lots of them make me nauseous just by whatever it is that's in the mix. Sometimes I think maybe it may have something to do with the yeast or the combinations of yeast and hops.
I know I tend to not like bitter beers but there are times, just like with teas and other foods, just the addition of something else changes the whole game. Bitburger may be one of those beers since it's so creamy. Just like when I drink a reallly nice strong fermented black tea. Doesn't sit well with me by itself but add a little cream and it's incredible and will sometimes even cure what ailes me.
One of my favorite beers is
Burley Oak's Barreled. Could drink that stuff like liquid candy. Yet, someone advised me against it based on what I had said about not being able to stomach hops and many other beers. (Shame they are always pushing their Rude Boy, a red beer which I cannot stand or stomach at all.)