I got a kit from this manufacturer the other day, but got the version without the c-pillar bar. I realise a tri-brace would be better for the front, and there are other options for more bracing in the rear, but didn't want to spend a heap on strut bracing & tie bars without testing them first to see the effect. Given the other suspension modifications I'm doing (32mm ASR autocross rear swaybar and other stuff), I think some reinforcement may be of benefit.

As for the quality of those bars, they don't seem bad in any way. I would certainly agree there are better looking bars out there, and ones that will offer greater rigidity, but these will do for the time being. I'm going to use them on a CRX, so it won't affect boot functionality much, but obviously on a Civic sedan or a hatch with the rear seat in the upright position the case would be different.