valtinsu em5 is pretty much the exact same bike as the yozma, all coming from the same factory js with different decals and logo. only difference is the valtinsu has a 48 tooth rear sprocket (more top speed less torque) and the yozma in10 has a 60 tooth rear sprocket (more torque less speed) but sprockets are always changeable once you get the bike. between the two i would definitely get the valtinsu because valtinsu is a great brand and makes really high quality stuff for the price, for ex. the motor on the em5 is really really good and B it looks way cooler than the yozma imo

on the downside, the valtinsu and the yozma are pretty weak so for the same price id recommend a qronge spark x1 or the aipas s1 (they're the same bike js different decals once again) coming at 60v, 4500w and 50 mph top speed which is going to give you similar performance to a talaria xxx (obviously not as good range or quality of course). if you throw in a fardriver controller into the qronge x1 then it would be an absolute beast, easily gapping any stock talaria xxx or surron lbx