I use my 45mm gingher most often and my 60mm quick change olfa for PP and thicker fabrics and batting and fleece I also have a 45mm ergomic that I used to use before I got the gingher off of ebay for a good price. I would say I use my 45mm the most but you still need the 60 for other things. The gingher cutter and blade I feel cut way better than my olfa ergonomic but about the same as my quick change olfa. the ginghers are more pricey but if you search on ebay you can get one for a relatively decent price, and the blades to me are better and last longer