WiFi or not WiFi this is the question

Question

i will try and keep this as short as possible but that could be difficult
over the last 2 years ive had quite a lot of problems with steady 5-6mb dropping to 0.001mb, phone line dying for upto 11 days at a time etc etc
strange thing was that every time i was talking to indian call centre the speed would be normal but as soon as i hung up it would drop to 0.001 again. of course every time i had to go through the same tests and was told there was nothing wrong and i would have to pay for an engineer.
after 9 days i was escalated to section 2 in the uk. they advised moving my hub from my wired connection upstairs (extension cable installed by bt) and plugging into the master test socket downstairs.
after 48 hours of testing it turned out there was a board out at the exchange and also my IP kept resetting. thinking all was fine i took the hub back upstairs again and was back to 0.001mb
they advised to leave it plugged in downstairs and for the last 6 months its been working fine at a steady 5-6mb.
we are now upto date.  yesterday i had infinity 2 installed.
engineer knocked and said he was off to the junction box to wire me in, yippee i thought.
came back 10 minutes later and phone and line was dead. said he could have broken something and he would have to call bt. 15 minutes later it turned out the socket that was reserved for me was damaged but luckily they had 1 spare so he wired me up.
he came back to the house. plugged in the hub next to the main socket downstairs and said could i test internet before he left.
i explained that i was told by bt when i ordered and as stated in the pre install email "Your engineer can run an Ethernet extension cable (up to 30 metres long) from where you can plug in your Hub and back to your phone master socket".
reason i wanted the hub back in my office upstairs was so i could get a wired connection for gaming which is always better than wifi and also my skyHD for on demand.
"oh we dont do any work or wiring in the house and why would you want it anyway as the longer the cable the less speed you will get. best to leave it next to socket".
wasnt happy but went with the flow as he was in such a hurry to leave.
now my question is:
which option would lose me the most speed.
running a cable up one flight of stairs and having my laptop and sky box plugged straight into the hub.
 or running on continuous WiFi with the hub downstairs and me upstairs.
other neighbours including a bt engineer are getting roughly 60-70mb
my estimate from bt, download 72-80mb and upload 19.9-20mb
i know it takes a couple of days for it to settle down but after various speed tests using bt wholesale i am getting:
yesterday after 3 hours installed on wifi 53.26 down and 15.27 up.
3 hours later wifi 35.26 down and 10.37 up
today wired downstairs 53.32 down 14.25 up
wifi upstairs 5 minutes later 38.82 down 13.47 up
the numbers sure do look a lot better than i was previously getting but strangely enough it doesnt seem as fast when opening websites. i have a very fast professional gaming laptop so its defo not that slowing things down.
should i stick with what ive got and hope the speeds go back up (after reading a lot of posts on here im not holding my breath) or should i follow it up with our friends in india and ask for the ethernet cable to be installed.
thanks in advance for any feedback and sorry once again for the long post.
edit:
image 1 wifi
image 2 wired
image 3 five minutes later wifi

Answer 1

Let it settle for a couple of days and see what you are getting then.
My wired download speed on my gaming desktop is 61(ish) and 17.5 up. If I run the same test on my wireless connection on my (aging) Alienware laptop I get 55 down and 17 up, so for me it's no real difference.
The main thing is your ping, the download speed is only half the story. A year ago I was on standard ADSL with a download of 6-7 and a ping of 17ms, now I am on 55-60 down with a 29ms ping, and haven't noticed any difference playing titles such as BF3 online.
Of interest is I had reason to call on the OR engineers last week to sort out an issue, and after they looked at my installation ran a wire externally from where the phone line came into my property, up to where my hub was, thus making my 'master' socket indeed the true master - not an extension with a master faceplate on it.