how will you be using it? at home in the same place all the time or do you want to be able to carry it around with you, take it out, etc? I absolutely love my solo and it works almost as well as most home units and out performs most portables. if I were you I would also consider the EQ instead of the v tower. The EQ can be used the same way as the tower but also gives you the option of forced air for balloons and easier draws. the EQ is a little more than the tower but if you find the right deal it's about the same price as a solo
I would suggest writing down a list of the top 5 most important things for you when looking for a vaporizer in order. of importance. That will greatly help you make a decision and also help us point you to good options for you particular needs. Remember there is no best vaporizer or we all would have it and all the others would go out of business. there may be a best for you, but even that is tricky and why so many on here have so many different vaporizer