I'd take a $4M cash offer for my startup over a complicated $5M offer any day of the week. Here's why. Buyer #1 offers you $4M in cash at closing. Buyer #2 offers you $5M. Sounds like an easy decision, right? Except buyer #2 wants to pay you $3M upfront, $1M over the next two years, and another $1M if the business hits certain revenue targets. Oh and they want you to stick around for three years. Suddenly that extra $1M doesn't sound quite as exciting. Haha. I've seen founders get so…