I've tried them. They are very low tension strings. For bluegrass and slap they work well. I had them on a '42 Kay and the combination really produced a ton of volume. They have a real solid fundamental with a quick decay and very little overtone series.
Many folks over at Rockabillybass.com have favorable things to say about them.
It took me a couple tries to get a good set from Rotosound however. There were some winding problems on the E string. At one point along the string there was a noticable bump.
$55 sounds like quite a deal..... IF there are no winding problems. You might ask the vendor about this.
They would be good for a nice bassy , thumpy jazz sound.'lil bit of fingerboard buzz...but , would sound good....forget them and get a set of pirastro pizzacatos...or jazzers
