I've had mixed experiences with 180-200gm vinyl. Far too many discs were warped... some terribly so. I bought two Dylan LP sets on 180gm vinyl. I kept buying copies of "Highway 61 Revisited" because they were all so warped. I got tired of returning them and went back to an old mono version. "Live 66" is much better, but I think it is 150gm. Sibbilance can be an issue, too, with heavy vinyl, so adjusting your tonearm's VTA can be a hassle, esp. if you go from regular to heavy vinyl fairly frequently.
On the other hand, many of my heavy jazz LPs sound great, but on the whole, I won't spend the extra money.
On the other hand, many of my heavy jazz LPs sound great, but on the whole, I won't spend the extra money.