Seth and the Foundry guys are so awesome and helpful. I think there is a direct correlation to how accessible and helpful a firm is even if they don't invest and how well their fund is doing. I believe the former gets them the deal flow they need for the latter.
I've never heard anything negative about Foundry or True Ventures. Every big VC, even the best, seems to have someone eith a tale of woe, but not those guys.
You'll likely get a lower valuation from Foundry than you would from valley or NY firms. But they're worth it. Hope to have them invest in one of my companies someday. Those guys are awesome.
The simple way around that - if you still want Foundry - is to get multiple term sheets and play them off each other. VC firms are like the Blue Angels - they'll follow each other into the ground if one of them leads them that way.
