Far be it from me to disagree with Genghis
but I'd take a slightly more pessimistic view of a group that's expanding from say 6 to say 8. Trying to get fixed costs down methinks, which could be a sign of something sinister rather than beneficial. Also, what's happening to the additional share capital?
Group ownership can be fantastic when it works well amongst a bunch of like-minded individuals. But there's no beating the fact that the best group is a group of one. I'm both, and the latter is much better (until you have to meet big capital expenditure!)
Good luck whatever you choose.