I've been using Thomastik Power Brights for about 5 years now and they completely convinced me to switch from the Boomers I used before.
Sound is bright and open and the string durability is quite good (usually replace them every year or so, but I don't play that much either). They give very clean arpeggios for the clean guitars and a nice sustain for the distortion.
Plus, I like the copper color of the top strings.
I really wish Thomann had the heavy bottom pack, as I usually like 48-52 gauge for my bottom string as it has a more stable tuning for drop D or lower tunings.