To concur what everyone said above, getting a good functional, proper laptop has became a game of lucky draw rather than a reality. I was a ex-dell user, got the priciest laptop in 2010 and I got what everything I asked for... 500 gb hdd, 4670 graphics, i7 power horse. But Dell screwed it with poor chassis design which mead to incomplete heat dissipation, hence cpu throttling, meaning I couldn't utilise the full potential of my laptop coz some idiot in Dell didn't knew the TDP of i7 gen 1 and he ce poor design.
I got a HPz and it is a downgrade from my earlier one, but at the end of day, I have a functional laptop. And that is what matters to me. Experiences will vary but the common denominator among them is the after sales support.
Gone were the days when companies allowed you to upgrade the parts. Now they know they can milk you in the name of updates. Your probability of getting the provision to update would increase if your budget increases. With everything soldered these days, they are the most favourites among companies as it helps to keep costs down which is passed to customers.
With the amount you are spending, I would go to the respective shop and get all my doubts cleared. They will guide you the correct models if upgrade is your priority. But you need to show them that you are serious about purchasing. Most sales representatives are trained to blabber only that much which is needed for an average customer. When you show interest, then they go to lengths in helping you out.
