Yuxin little magic sq1ms is better than qifa sq1. Yuxin little magic sq1ms is factory slice magnetized, while qiyi Qifa sq1 has frosted plastic with candish shades. Although Qifa has good corner cutting, it is way too slow.
If you are on a tight budget, get the mfsq1. It is fast and smooth unlike the sluggish qifa. However, if you are getting the mfsq1 and you are going to magnetize the slices by yourself, don't get the stickerless version. I have tried to do that and it failed pretty badly. However, slice magnets on sq1 are not necessary for beginners.