Do you recommend it? I am getting ready to step up to SLR camera so I can start taking professional quality shots..is it easy to use? I hate the regular digital camera with blurr picture of moving objects or slow lag time in between shots etc…
The XSi is a nice camera. However, unlike Sony and Pentax, it does not have Image Stabilization (IS) in the camera body. With Canon and Nikon DSLR cameras if you want IS you have to pay extra for it when you buy an IS lens.
The Sony A300 (10.2mp) and A350 (14.2mp) have Live View that actually works with the auto focus. In a situation where the only way to get the picture is to hold the camera over your head? Flip the screen down and you can compose, check focus and shoot. Using your camera at ground-level? Just flip the screen up.
Sony currently has 26 branded lenses, has released a Carl Zeiss T* line of lenses and every legacy Minolta Maxxum AF lens made since 1985 will mount to any Sony DSLR. Of course, with the in-camera IS every lens you use will have that benefit.
Most accessories from the Konica-Minolta D5 & D7 DSLR cameras are compatible with the Sony DSLRs since Sony bought the technology from K-M in 2006.
The Pentax K200D and K20D can use every Pentax K-mount lens made since 1975, whether manual focus or auto focus. Again, with in-camera IS every lens used will have that benefit.
Regardless of which camera you buy, plan on taking some photography classes. Until you learn about composition, light, shutter speeds, f-stops and ISO your pictures will not turn out the way you want. The most expensive, sophisticated camera in the hands of an unskilled person will take lousy pictures. Its not the camera, its the photographer.

It's a dream camera.
I'd buy it in a heartbeat if I had the cash.
References :
Almost everybody I've asked about digital cameras.