Plate size and dual heating plates with accurate heat display are more important than tonnage IMO. 6 tons is more than enough but really there's a combo of factors at play.
Feel is most important. Very ez to over do it and blow the paper or bag with anything over 6 tons so there's a nuance to each and every press and how much pressure to apply. It's very rarely cookie cutter, one way fits all so I like hydraulic over pneumatic or t-shirt press spring loaded clam shell design. Twister style is ok and I have one but it needs to be bolted down to a very sturdy surface where as my hydraulic is free standing.
For personal size I'd look for at least a 4"x4" dual heat plate, digital display, and hydraulic operation.
Equally important are the bags and paper. Lots of cheap garbage to avoid but here's some of the best $$ can buy without a huge markup
https://www.amazon.com/s?k=The+Press+Club
You'll also need wax tools + glass and or silicone jars