Well I don't know yet, I played and finished Half Life 2, along with Episodes 1 and 2 a few months ago when I got The Orange Box for Xbox. Now just the other day I got a new laptop which is much better than my old shit computer which couldn't even run Minecraft properly.
Now I have Black Mesa, so once I've finished that I will let you know. So far however I prefer Half Life 2.
However I don't know how much of the game is actually different to the original Half Life, there are some enemies in the game that I've never seen before, and I would have expected them to also had been in Half Life 2, unless each game has unique enemies?
Just wondering if those things that look like over-sized headcrabs that scream or shoot sound waves at you are in the original Half Life.