I'm pretty sure I don't want to convert my Sirrus, although it appears to be an excellent candidate for it. Let's just say I'm "mechanically challenged" and leave it at that.

I appreciate the two posts above. Based on [MENTION=310598]350htrr[/MENTION]'s comments, it would appear to best option for me is a mid-drive. I want to pedal but I'd appreciate a little boost from time to time. I think the pressure sensor makes good sense for me as well. Will continue to do the research. Thanks so far!