Do the attachments on mini Tillers work?

I had narrowed my choices down to either the Mantis 4-cycle or Honda FG100.

Can someone tell me if the border edger and other attachments work well with a tiller? The border edger is the key feature in order for me to get "funding" for this purchase since edging is my financier's job. :-)

I have a small backyard. I would use the tiller mostly to create new beds from sod lawn and work the soil.

Thanks in advance.