Hello Mike. I wouldn't buy online because it's good to be able to go to the shop IF you have problems later. HomePro are usually expensive but you will find a range of other shops with good offers. Check whether the prices offered includes fitting and materials - these Guys are usually slick and do a good job. But check that they pick the ideal siting for the compressor outside, (not just the easy spot for them).
The best and quietest I ever bought was LG - I would stick to the usual Panasonic, Toshiba etc. otherwise.
Decide what size you need for the room and no need to go too high IMO.
Also look around for the TV - I bought a 55" Aconatic for B7490, delivered and set up recently. It's excellent. Good luck.