I switched to RTM after Microsoft bought Wunderlist, and I'm satisfied with it. It doesn't allow file attachments, but there are workarounds. I do think $40 is

I switched to RTM after Microsoft bought Wunderlist, and I'm satisfied with it. It doesn't allow file attachments, but there are workarounds. I do think $40 is a tad steep when compared to some of the other options out there.