I have been drooling to get an SP3. But...
...5 months ago I bought an i5 laptop (clocked at 2.4 ghz) for $300 so I could work with visual studio on-the-go on my LOB app and a surface rt for $199 to field test the LoB. Both of these combined still didn't cost me anywhere near an i5 or i7 sp3.
I simply cannot justify buying an sp3. Me sad.
The Surface Pro product is Microsoft "halo" product. Microsoft's version of the Nvidia GeForce Titan if you like (even thought Titan is essentially a broken Tesla where it didn't pass certification for the hard environment the GPU will be in, but it is used by Nvidia at showcasing to consumers a taste of what the company can do, and don't expect everyone to get it). This is not a product for those seeking the best deal. It is a product that shows Microsoft vision, and glimpse of it in the future, offering you the best Windows experience possible, junk free (no subsidized extra trial software to reduce the price of the system as an ad vehicle for them), innovation, smart engineering, and high built quality, and ultra quiet operation (to fairly quiet operation under load, compared to other products of its class).
And for some reason, the above sounded like I copies and pasted this from Microsoft website.
I know you have a Surface RT, but for those who don't and are in similar situation as you or just looking at getting a cheap laptop :
Here is what you would get with the Surface Pro (whether be 3 or decide to wait for the 4).
-> Clean system out of the box and ready to go, no junk, bare bone drivers without manufacture useless bloats, just the important stuff getting you the best Windows experience.
-> 1 system to carry. 1 system where you have all your stuff, no need to break your head in trying to transfer files between systems.
-> Thinner and lighter than the system that you have. (of the moment of this writing)
-> Quieter than your low cost system
-> Longer battery life
-> Digitizer screen for note taking, planning, drawing, conceptualizing, etc.
-> Best touch screen.
-> High speed and high-end SSD, and high-end memory (fast at the max the CPU supports, and decently low timings for being low powered DDR3). This point and the first, plays part into why the same specs machine from other manufactures aren't the same, where the Surface Pro being faster in benchmarks.
-> Solid build quality
-> IPS display for beautiful, non over-saturated or washed out colors, with wide view angles
-> Backlight of the display uses a dimmer circuit, and not a PWM (Pulse-width modulation) to control the back light intensity, reducing, for those sensitive: eye strain, headaches and makes the display easier to read (note: they are many factors for these effects, PWM is not only the factor. See your optimistic if you have problem looking at computer display as it could be something else. And perhaps you may want to try a non PWM driven display, such as most but not all, Dell UltraSharp monitors, select BenQ monitors, to name a few. Look at in-depth monitor review. They normally cover this). PWM driven back light, means that the LED row of the back light of the display which is used to illuminate the panel, turns on and off at a frequency based on the LED illumination strength and brightness settings, like a super fast strobe light, where you don't see the flickering. Slower the flickering, dimmer the display will be, brighter the display is, the faster it gets, and at max, it's full on. If you have trouble reading your display, and it is not because of reflection, and you feel the need to increase the brightness of the display, despite hurting your eyes, you are probably PWM backlight driven display sensitive.
PWM is used because:
-> Its not an issue for many/most people.
-> Consumes less power, helping increase battery life of the system
-> Cheap to implement. Much cheaper than a true dimming circuit.
Note: the Surface Pro line uses a hybrid design. I don't know how it is on the Pro 3, but the Pro 1 and 2, at ~30% brightness it switches from dimming circuit to PWM. This is probably to do its best to help extend the device battery life.