The GW1 OST will always have a special place in my heart - even hearing some of my favourites, like First Light, chokes me up. JS's work is always very good for ambient environmental immersion. But aside from a few of his tracks for GW2, I never really felt like his work on this game specifically stood out. The most emotive pieces are the GW1 tracks that play in Ascalon maps, imo. There are a couple, like the charr themes, that stick out in my mind, but that's it. The rest all kinda blur into one big "nice" ambience after a while. I feel like the in-house team have brought a lot more distinctive, lively character to the soundtrack ever since. There are some real standouts, and the expansion OSTs are fantastic. I've said before, I wish they'd properly release the LW season soundtracks the same way. I'd happily buy. Soundcloud is a little restrictive, even if I can appreciate getting stuff for free. One I haven't seen linked here is the Marionette battle music from S1, another of my faves:
(I really miss that fight, too! :'( )