I've been using 10-38 strings on all my electric guitars the last 15 years and I use these for standard D tunning (one tone lower).
Over all these years I've try and been using also Fenders (both bullets and ball ended) and Dean Markleys (when they were available) and as far as the sound, longevity and price is concerned, the GHS are my strings to go.
The sound is balanced (not super bright or muffled) and while they will not last forever (no string will anyway) they will last for a long time before they get extremely tarnished and dull.
One star off because over these years and after more than 50 sets used, there have been quite a few sets that came kinda tarnished out of the box (especially the G string). Not a real problem in real life (you can remove some of the "rust" with #0000 steel wool) but provided that the strings are packed in an -in theory- air sealed package, is a little strange.
One thing to keep in mind: the GHS 10-38 Boomers come (or used to come at some point) in three different flavors in terms of packaging: 1) Orange unsealed package with individual strings unsealed, 2) Black sealed package with individual strings unsealed and 3) the so called Nitro package (per GHS themselved) which is black sealed package with the individual strings sealed. I had all these different versions and the "rust" issue was only with the first two "flavors". After contacting the GHS company they replaced all the problematic sets and let me know about the Nitro package so make sure you buy those (black sealed package, and every string inside the package is sealed as well).
Still, for the sound/performance/price these are hard to beat.
