I developed the BizPlanBuilder business plan software template
We include valuation, ROI (a complete investor deal evaluation) for YOUR edification -- to better understand your deal and give you a basis for funding negotiations, but NOT to give your investors. They will ask you what you think your deal is worth, so now you'll have a ballpark...
BizPlanBuilder includes Excel based financial models I think you find very flexible and easy to use -- it also presents well to investors.
We also include Sensitivity Analysis (best/worst case) making it easy to run what-if? scenarios.