I have a 2005 Kubota L3400 (note my handle). It is a basic gear driven, 34 hp tractor with loader. Simple and rugged. In the 12 years I've owned it, I have never had a problem with it. I would buy it again (maybe with a cab...). I use it to maintain my 1/2 mile driveway, snow removal and brush cutting.
When I bought it, I asked about putting a backhoe on it in the future. The dealer told me not to waste my time. For the cost of a BH, I could rent a mini-excavator many, many times and get a lot more done. From first hand experience, in the mean time, I have confirmed that opinion. A small tractor BH is lacking in every aspect compared to a mini-excavator. The $10,000 cost of a BH will rent an excavator for many, many hours.