Let me preface my response by saying that there really is no right or wrong answer as it’s really a matter of taste, each platter has a slightly differing “feel” much like playing a Les Paul has a different feel than a Fender Jazzmaster. It’s all subjective, not definitive.
For me, at the “lightest” resistance setting, the platter of the SC5000 is superior to that of the CDJ, it’s smooth, feeling as though it’s almost floating on air. Where you may find a difference is the texture of the sides of the platter, the style of the SC5000 than the CDJ. The SC5000 platter is capacitive, however, I find that it’s really a moot point as the capacitive nature of it hasn’t hindered or helped my ability to use it.
For beatmatching, the platter works perfectly—you can easily push or pull the platter sides to compensate if the pitch drifts. Even more handy, the dedicated pitch buttons below the fader. I never thought I’d use the it they come in handy when mixing and making adjustments on the mixer (fader, we etc) as you can simply tap the buttons rather than perform the correction via the platter. In a pinch while deep in the mix, it’s quite handy. While there will be some purists who may shun such a thing, I opt to embrace it. But that’s just me.
I’d encourage you to find a local retailer who has a demo available in store. Most online retailers offer generous return policies, so if needed you can always purchase the hardware and give it some hands on time.
Ultimately, it will be up to you and I would strongly suggest to take feedback with a grain of salt (even mine) as it’s really a matter of taste and personal preference—it really should be tried out in-person prior to making the investment.