Having played with both Form Simplicity and Transaction Desk, I much prefer FS since TD is anything but intuitive. However, with my FS Pro account (not sure whether that's thanks to FAR or my office), I cannot use my existing Dropbox account to get electronic signatures. Tech Support tells me I could if I had a basic account but not with the Pro account. Since I'm too stubborn to upgrade to Ultimate to enable e-signing, I'll learn to live with TD. I'm frustrated with that FS policy.