Upgrading from U46 MK2 to U-Mix Control Pro 2:Pros and Cons

I have got to a point where I have saved some funds and I'm looking to improve my experience with Mixvibes and my whole DJing hobby. I've been practicing with Cross 1.7 and really like the new additions.
My current setup is that I have two decks and a mixer, plus a U46-Mk2. From the back of my mixer I have a cable that plugs into my laptops microphone port - I then use the "stereo mix" device in Windows 7 to play out the mix through my (pretty decent) PC speakers. I do this purely for space reasons - I don't have room for another amp and speaker set.
Some of you will be aware of my problems with my laptop as it is an icore 3 sandybridge. Recently, for whatever reason, these issues have been occurring more often. It is actually stopping me from practicing because each time it is a battle to work out how to get my signal strength up from my decks. (it usually involves restarting my Windows 7 laptop several times, unplugging the U46 until eventually it works). Sometimes signal strength will just suddenly drop through the floor after 20 minutes. Right now it just isn't as fun as it should be. I deal with technical IT issues at work, I don't want to be doing it at home.
So I've been looking at the U-Mix Control Pro 2 and really like the idea of being able to acccess all controls in Cross on it as opposed to moving my laptop mouse etc. I want to keep my decks and use timecode vinyl still but if I got good it would be useful to have the U-Mix Control Pro 2 to just pick up and take to parties etc.
Before I took the plunge, I wondered what you guys thought? Would I notice a difference in performance? Is the U-Mix Control Pro 2 more reliable? I would sell my U46 and my current mixer - as far as I can see I'd have no use for it anymore?
What do you guys think - go for it or save my cash?
My current setup is that I have two decks and a mixer, plus a U46-Mk2. From the back of my mixer I have a cable that plugs into my laptops microphone port - I then use the "stereo mix" device in Windows 7 to play out the mix through my (pretty decent) PC speakers. I do this purely for space reasons - I don't have room for another amp and speaker set.
Some of you will be aware of my problems with my laptop as it is an icore 3 sandybridge. Recently, for whatever reason, these issues have been occurring more often. It is actually stopping me from practicing because each time it is a battle to work out how to get my signal strength up from my decks. (it usually involves restarting my Windows 7 laptop several times, unplugging the U46 until eventually it works). Sometimes signal strength will just suddenly drop through the floor after 20 minutes. Right now it just isn't as fun as it should be. I deal with technical IT issues at work, I don't want to be doing it at home.
So I've been looking at the U-Mix Control Pro 2 and really like the idea of being able to acccess all controls in Cross on it as opposed to moving my laptop mouse etc. I want to keep my decks and use timecode vinyl still but if I got good it would be useful to have the U-Mix Control Pro 2 to just pick up and take to parties etc.
Before I took the plunge, I wondered what you guys thought? Would I notice a difference in performance? Is the U-Mix Control Pro 2 more reliable? I would sell my U46 and my current mixer - as far as I can see I'd have no use for it anymore?
What do you guys think - go for it or save my cash?