I too have the QBot and love it. I bought it used and upgraded along the way. I taught myself along the way with the QBot Group information. Upgraded my machine and the people at QBot helped me make the decision of which machine to buy and what parts I needed to get everything going. I really have had great luck with QBot and they have been a company that upgrades numerous times adding small features people are looking for and many, many times at no charge. I really can say the company has been very helpful and people friendly. Here is the group info
https://groups.io/g/QBOTSquad
Good Luck on your decision!