I can't speak to the 302.5, but I have some initial impressions on the 303.5e having just bought a new one. It has so far appeared to be very strong and durable. I have run similar sized machines that my friends own that were not Cat machines. One was a Kubota that was around 6000 lb. While a nice machine, the 303.5 is in what I consider to be a different class even though they are both mini Ex's. The Cat is substantially heavier built, and has many wonderful features such as the new COMPASS control system. Since I am currently running a mower on it, it is very nice to be able to run continuous flow to the Aux. hydraulics and be able to adjust the flow rate as well. I don't know what series of 302.5 you are thinking about, but if it is close to what I have, I think you will like it a lot. Hope this helps.