Here're more opinions... I looked at the Deere e models before I bought our used
L3400, and read some reviews, and just wasn't impressed, cheaper or not. I like R-4s for the reasons stated, mostly they give good traction, not too much tear-up on lawns, and way better protection from puncture in the woods. Smoother on hard surfaces. I am a Kubota fan, but the TYM looks promising on the spec. sheets.
Like others have said, maybe a clean used tractor could prove to be your best bet. The listings from foreman Etexas offer a lot of solid choices to consider. You shouldn't have trouble with a tractor if it is cared for and working well when you buy it, you want to be familiar with it to change your own filters and fluids, and taking your $10K and borrowing another $6-7K might just get you a lot more machine, and worth the added interest for a few years. You will be happier with more weight and power, up to a point, every time you use your tractor! And until you start getting into Grand L Kubotas (not familiar enough with the others to offer models) the features, or lack of them, are almost always very useful, once you have them, or don't! Even the Grand L's features are nice to have, although not necessary in the large part. I wouldn't have a tractor without SSQA, and rear remotes are handy, but everyone has differing, strong opinions. Your uses, both what you know you will do now, and future discoveries, will drive this adventure... but don't settle for something that doesn't feel right, or maybe "just" enough for now. I too really like the Grand L 3240... "asking" price under $18,000, and a sweet, capable tractor!