My second camera wasn't a DSLR, but a mirrorless camera. I got the NEX 7 in 2012 and was surprised how many settings it has and I was really charmed with the two turn knobs on the top of the camera. It became a lot easier to quickly change aperture and shutterspeed. It also was able to record video, which made it even more versatile.
Soon after getting the NEX 7, I really felt the need to use my 75-300mm lens on the NEX 7. Unfortunately Sony changed the mount for mirrorless camera's to an e-mount, while the a350 has an a-mount (legacy from the acquired Minolta brand). Luckily there were adapters available. At the time there were 2 flavors. One with autofocus and one without. I chose the one with autofocus transforming the mirrorless camera into a camera with a transparant mirror.