There are a lots of different types of erhu strings. They come in different gauges, are made of different materials and each maker has their own little trade secret. When it comes to stringing your erhu, some people, even myself are at a loss of what to get.
So here are some information culled from experiences and feedback from customers (and myself) outside of what the packaging says. I hope they can aid you in making a decision on what type of string to use.
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"Safe Choice Award"
These strings are the more popular choices. They sound good, have pretty short run in period and are easy on the hands. If you have no clue what strings to use, just get Mudan strings. If you want something better, get the Fang Fang strings.
Mudan Erhu Strings
Fang Fang Professional Erhu Strings
"Loud-Hailer Award"
These strings are of thicker gauge and hence produces a tone with more body and volume.
Beijing Hua Mei Niao Brand Erhu Strings
Dunhuang Erhu Strings
"Challenge Yourself Award"
Because these strings are stiffer than the rest, you need more effort to press the strings and bow to get a good tone.
Beijing Hua Mei Niao Brand Erhu Strings
Dunhuang Erhu Strings
"Best Value Award"
Cheap and good
Mudan Erhu Strings
"Best of Both Worlds Award"
These strings give better volume and are still easy on the hands
Ming Ren Erhu Strings
"Best Singer Award"
These are arguably the best sounding strings.
Fang Fang Soloist Erhu Strings
Thomastik-Infeld Soloist Erhu Strings
Pirastro Red Dragon Erhu strings
"Plug and Play Award"
These strings sound good almost immediately. You don't need a week to run them in.
Fang Fang Soloist Erhu Strings
Thomastik-Infeld Soloist Erhu Strings
Pirastro Red Dragon Erhu strings
"Die Young Award"
The performance of these strings deteriorates pretty fast. Maybe they sound too good to begin with hence the difference is stark. So save them for special occasions
Fang Fang Soloist Erhu Strings (To be confirmed)
Thomastik-Infeld Soloist Erhu Strings
Pirastro Red Dragon Erhu strings
"Acquired Taste Award"
Either you like it or you don't. Made from silver and sometimes gold, these strings can have surprising results on your erhu - either way.
ABing Silver Erhu Strings
ABing Silver and Gold Erhu Strings
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If you think I missed out any strings worthy of an award, please feel free to comment.