For casual, fun driving on even the lightest of grass, don’t look at anything with wheels smaller than 1:10 buggies.
Monster trucks and other tall off-road vehicles won’t be fun on asphalt due to rolling all the time. Low stadium trucks and truggies are OK.
For lower cost and ease of maintenance, rule 4WD out. 2WD has a bit of a bad rep because the open diffs in the past would allow them to get stuck all the time. We have sealed diffs with options for oil viscocity now and having one rear wheel off the ground no longer means walking to your vehicle for some HOG (Help On Ground).
If you can find something that meets these specs in the Tamiya lineup, take a closer look at that model.
Outside of Tamiya, there’s the Pro2 family of vehicles from Team Associated. Something like the SR10, LT10, or DK10 would be a good choice but they are RTR. The DR10 kit is very affordable for what you get, and can be built into most of the other models with very few parts. For example, just a shorter chassis makes the footprint similar to the three models I mentioned before.
These vehicles are based on the RC10 B5 so the handling and durability are excellent. They are popular and have been around for years, and there’s good support for the platform from AE as well as aftermarket upgrade parts manufacturers. This means that parts availability should be good for years to come. I have a B74.2D as a serious vehicle and my standards for evaluating these things is high. Still, the Pro2 series are very good cars in my opinion, and I own an RB10 myself.