I can choose between a Sony, Philips or Loewe TV...they all seem nice, but which is the best ?

if you are going plasma go philips, if not, for all other types of t.v. go sony. loewe is a low quality off brand posing as a good product.

That's a hard question to answer without knowing the features and the price for each individual TV. But if all are around the same range, I would go with Sony, just because I have bought many of Sony products in the past and have all been very reliable.