I agree with cat_woman. Wait and use what you have.
Maybe you need to ask yourself why you have not used the Silhouette you have?
Is it in an inconvenient place so it is a nuisance to use? Then move it if you can .
Are you a hands on person who prefers manual dies and machines?
Do you get frustrated with technology?
There is nothing wrong with these reasons, everyone is different, but a newer machine won't change them . If these are the reasons why you have not used what you have then if you buy another machine you will just have two machines collecting dust .
In my young an impetuous youth I wanted to learn to knit. My frustration was in the stratosphere. I had to push myself to finish things and I never like how they turned out. I bought different needles, yarn and patterns. NADA. One day I asked myself why I didn't like knitting. The answer was it was monotonous and I don't like bulky knit sweaters.
Gave away the yarn patterns and needles