I'm currently using Lovan Imperial 2900 stands for my ProAc Tab 50 Sigs. They're 29" tall, and have a single slender stem support. Although the top plate is quite small the stands are very sturdy. I bought mine from Audio Advisor, but I'm not sure if they carry them anymore. Prices on a pair range from $199 to $279.
Here's a link to the Lovan website. The ones I own are like the one on the right only taller:
http://www.lovanaudio.com/stands/Imperial.htm
Good luck!
Here's a link to the Lovan website. The ones I own are like the one on the right only taller:
http://www.lovanaudio.com/stands/Imperial.htm
Good luck!