We are currently using a Thomson wireless provided by Telecom about 3 years ago.  We have a lot of drop outs.  So I have borrowed a Huawei modem/router and so far we aren't getting drop outs..  We are in a street that can't get VDSL and ultra fibre won't be available for at least 2 years. 
So our next option is to buy a decent router.
My questions are what would you recommend?  
And I would prefer a modem/router all in one as it just seems easier, but if we were to go for a decent router, what modem do we then get?
We also lose wifi connection in the lounge as its obviously just a little out of range.  So are there modem/routers that have a better wifi range?
THanks