IMHO, get the Rock. They are inexpensive, dependable and standard. So many guns have gone custom, that they are not even 1911's anymore. There is great comfort in knowing that if something goes wrong, any gs can probably fix it or has the part. A good 1911 will last forever if left alone. When we start monkeying around is when we get into unknown territory.
Get the Rock. leave it alone, and be happy.