compression fittings

[kennymck001]

changing my heating pipework from 8mm to 15mm and noticed the big price difference in compression fittings for example a reducing tee (22x22x15) can cost from £2 to £8 each , I know some are cheap brass and dearer ones are copper , but are the cheap ones ok or should I go half way , as I will be buying quite a few the overall cost or saving could be quite a bit..
cheers

 

[REDSAW]

remember not to use compressions where you cant access them, ccause they will leak/.
end feeds are only 30p each /.?.

 

[Hugh]

end feed all the way

 

[payney1974]

if your going to pay that sort of money for one fitting i would just pay a plumber to do the job!