I use pyramid strings a lot, both on acoustic as on my electric guitar. The sound is very balanced, bright, but also warm and not too extensive on the heights. Even after trying various brands (and much more expensive ones), I always come back to Pyramid strings.
Only downside to mention: they hold their excellent tone not for as long as other brands do. I play a lot and need to chance strings often. However, since I use tapping and various techniques, which are quite demanding for the strings, that's no surprise. The low price is a welcomed relieve.
Very good strings for a reasonable price, I recommend to check them out!