I have to admit, I find the practice of avoiding "better" apps that might cost $3-7 in favor of free apps that might be merely adequate to be quite amusing. Never thought I'd see the day that that kind of money would actually be considered a barrier for functional software.
I don't differentiate between free and $10 when it comes to useful software. That kind of price-range simply isn't a factor for me. If it's useful to me (and does what it claims), it's all a bargain.
I'm "all in" on Mantano Premium, myself. Best $7 I've ever spent on software. Bar none.