V Star vs V Beam laser?

Hi, what is the difference between vstar and vbeam? i find very lil information about vstar. From what i've found, they are alike. Both lasers target redness and stimulates bits of collagen and vstar is more expensive too than vbeam. my queries are: 1. does vstar improve better or give better results overall ie. scar texture, collagen stimulation, redness than vbeam ? 2. would you recommend vstar to fix the edges of a scar? 3. Which non-ablative lasers are better in improving texture of scar?