This graph compares the loaded Q of a W8JI (conventional) and AG6K (nichrome) suppressor. Note that the HF Q for the conventional suppressor is higher than the nichrome type. At VHF, the two types are essentially equivalent.
In other words, unless you're selling nichrome wire, there ain't a dime's worth of difference. If you are selling nichrome wire, then there's about $20 worth the difference, in your favor.