I have one I bought a couple of years ago. I really like it. It it perfect for what you want. Take advantage of the sale.
Buy it! Many of us have or have had the Rumble 25 and will attest that it is the best $99 bass amp available. The Rumble 40 is a bit lighter and roughly the same size. It has the same front end as it's more powerful brethren, but costs twice as much at $199. Either one is a fine choice.
Done! I have a 200 combo and love it to death. I’m hoping to be impressed by the 25.