Variety, they say, is the spice of life. Embrace it.
Lyrans are not the same as the Federation. You could hypothetically have a contest and settle who made the best model of any given Federation ship by popular vote. You would never achieve agreement, but possibly concensus.
Lyrans do not have much in the way of reference material to define "the best model". It becomes more of what you like rather than does the ship look like it does in the movies or TV.
Besides, I personally prefer Thu11s old Lyrans to the new ones by far. It's not a matter of better or worse modelling technology or poly count. Its merely a matter of style.