if you are using a pure wireless repeater hub (which from your description of a repeater/booster you are) i.e. an access point running in that basic repeating mode then you will be gaining distance but reducing throughput significantly.You also can only use WEP which is easily breakable using a packet sniffer.

Apple AirPort thingy uses WPA/WPA2 as does the TP-Link that we're using in the office. I suspect more use WPA/WPA2 available.

Linksys is a wholly owned by Cisco (that was a few years ago). The TP-Links we use throughout our building have given no trouble so far.

Yes I know Linksys are owned By Cisco that is why I mentioned it earlier. Although Cisco products are beefier and have better options than the domestic Linksys stuff. I've had bad experiences with TP-Link so tend to avoid them.

I installed these as they only wanted 2.4Ghz:

http://www.solwise.co.uk/wireless-el-era150.html

However either of the below would I'm sure more than cover the property you're talking about in 2.4 and 5Ghz bands:

http://www.solwise.co.uk/wireless-el-eap600.html

http://www.solwise.co.uk/wireless-el-ecb600.html

[dons tinfoil hat] If you go with the powerline stuff make sure it supports encryption. Running high frequencies across power cables makes them broadcast the signal. I think most of them have encryption built in now.

Also if you've any radio hams in the area they'll probably get pretty ****ed off.

Are you able to switch to 5Ghz range? most 802.11n APs support this now

Does the sky router support it?

Does the sky router support it?

No, but I have a Fritz!Box 7390 to install which does.

Has anyone used a Fritz!Box with Sky (BT) fibre broadband? Any issues?

I agree that tp-link is cheap but it's not all 5h1t.

However moving up the price range I have installed a ruckus 7343 in a large farmhouse with 2-3ft thick walls as they had a really bad dead spot in the one end, the kitchen and outside patio where they spend most of their time in the day. Their previous support people had a mix of about 8 netgear, tp-link and one other I can't recall home plug wifi points repeating the signal all over the place with no consideration given to interference and no coverage in the most important bit of the house. All the original kit is still in place as it is just in testing phase, originally I estimated three wifi points to get the coverage they wanted. The building is an old rectangular farmhouse (3ft walls) with an identical extension each end (with lots of foil backed plasterboard) so it would have been one in each end and one in the main part of the house. The one point that is in one of the extensions is mounted at ceiling height on the 1st floor but the coverage is pretty amazing. Nearly 3/4 of the house and it is possible to walk around the outside for a good 50-60ft easily as well. Now I know these are not cheap but if you added up what they had spent on the 8 home plugs then the cost is reasonable. I recon that just the one mounted in the middle of the house without all the interference from the other points would probably cover it all.