Welcome and congrats!! Both the vamo and the svd have good reviews. I think it comes down to replaceable batts or the sipmlicity of chargeing the device. Just know that at some point the svd will not take a charge and it's done..... You can replace the batts in the vamo, but it also will have a life expectancy... I'd say with reasonable care the vamo could last longer since you can replace the batts. JMO...