Help....

So Mistress Wife checked our Paypal and was delighted to see we have a surfeit of funds after a couple of returns. This has led us into something of a quandary......CB6000S, or the nJoy Pure XL2... I already use the nJoy Pure large, and it just pops in, so I don't think the XL will be a problem size wise....help...I'm at a loss as to which one to pick...