Okay I've stalked this site for quite some time now, and thanks to many of you all's knowledge and expertise, you have encouraged me to save my money. Well, now has come the time I have finally saved what I assume is necessary to step my foot into the world of the industrial machine. I have finally saved approximately $2500 for a machine, and now I'm stuck. (I have separately for the servo motor and shopping, as well as a little differences in costs if necessary if it makes a drastic difference). I need your help! I can't decide between the Consew 227 or the 277 and/or their different models. From what I've read the "R" on the end of each model type represents "reverse" which I think for my use is absolutely necessary. What I'll be sewing is leather bags (the usual) plus some saddle bags, leather luggage, and occasionally sometimes jeans with 8+ layers of denim (typical jeans). I've tried and tried researching the differences and sometimes they're so vague I can't derives between the two. Does the advertise spi for each mode mean up to that particular width or just specially that width only? Also the distance between the foot clearance gets a bit confusing. Also on a more drastic and far fetched question, what is the difference between 227R-1, 227R-2, 227R-3, as well as 277R, 277RFS, 277R-3, 277RBFS, 277RFS and their various different models between types, etc? All the lettering confuses me and I can't seem to find a source to clarify the differences between types of each different model! Please help!