Hello mate,
I have a cameo 3 and as everyone has mentioned it can be a bit hit and miss (vinyl slipping etc but each machine has teething problems) but once you get round these it's a pretty good machine. I've cut t-shirt vinyl for over 200 in this past month and it's worked a treat. It just takes a bit of practise. I have had problems and have asked on here for help which the response has been first class. If it wasn't for this forum I wouldn't have cut vinyl for one t-shirt let alone 200.
I have just started out too and am on a fairly tight budget so I know how you feel