I don't think 180 gram vinyl sounds better than regular vinyl.
However, I'm not sure that improved sound is the point.
I always thought the object of the thicker vinyl was durability.
The thicker vinyl is less likely to warp or lose shape than the thinner vinyl.
If this actually bears any fruit, I can't say.
If you think 180 gram is overkill, just stay away from the 200 gram vinyl. ;^)
However, I'm not sure that improved sound is the point.
I always thought the object of the thicker vinyl was durability.
The thicker vinyl is less likely to warp or lose shape than the thinner vinyl.
If this actually bears any fruit, I can't say.
If you think 180 gram is overkill, just stay away from the 200 gram vinyl. ;^)