To me the evaluative metering on Canon's cameras is poor outdoors, but fine indoors. It just seems inferior to Nikon's matrix metering system from my experience with both.
Honestly though, you cannot go wrong with the T2i, there are no major flaws with the camera. I think a good starter lens would be the 18-135mm IS rather than the standard 18-55mm IS kit lens, unless you have any specific lenses in mind.
As for future cameras, there will always be something better, it's just like buying a new computer. Get the camera when you need it and don't worry about the rest, with SLR cameras lenses are where your money should go rather than bodies. Unless you have specific needs that require a higher end camera body.
