Oh, I thought you were getting paid by someone else to take the photos. The T2i gives outstanding results in good light. All of the professional models on my website were shot with the T2i and kit lenses (18-55 and 55-250). If you want to see sample, please visit http://www.debbiemoorephoto.com I have just upgraded to the 5D3 as I am now shooting alot of weddings and needed the low light capability.
To be honest, these photos are "so-so" (mostly flat & dull). And post-processing is not impressing at all.
I had 550D and thought it's an amazing camera. Before I 've started shooting with 5Dm2 and primes
You're right - I should re-edit these photos. Had not yet begun using levels when they were shot. It makes a big difference.