I definitely understand that and I don't want to get something that is frustratingly under-capable.
I'm looking at the highest HP they offer in the smaller frame tractors I've been looking at. How much land are you roaming with that 1648 you have? I don't doubt that it's awesome, but it's too wide to get in anywhere between the trees I want to clean up around and that one is clearly too big. I'm trying to understand if the L-series is also too big. Remember, I'm on 4.2 acres with quite a bit of that used up by a house and two long drives. My landscaping projects won't be nearly as most people's on these forums.
This is for sale at a dealer near me:
http://www.tractorhouse.com/listingsdetail/detail.aspx?OHID=8579743
It's equipped the way I'd have them quote me a new one except for the tires. I suppose that since it's used I could buy it, try it for a couple seasons and then trade it on something else if I decide I would be happier with something smaller? If I negotiate a reasonable price (which I'd need help with), then I may not take too big a haircut if I decide it's not the right tractor for my small lot.
I definitely wouldn't spend $18,700 on a 14 yr old tractor with 2000+ hrs.
Kubota makes a fine tractor, but they aren't without their problems (my buddy has had two new 'bota's in 4 years, both have had issues, the most recent one needed the tractor split. They were covered under warranty so all is good). Any tractor can have problems, but repairs can be expensive!
If I was dropping $18k ... it better have a warranty! (My personal opinion)
I use my Massey on 15 acres. I also use it commercially. (I've put 300 hrs on her in the last 7 months). Excellent machine, no issues. There are times when I could use more HP, so I think you're making the right decision to get the most HP that you can (can't add that later).
I do use it in the woods, and it is definitely more cumbersome than my little CK20 was. (When I can afford it, I'd like to add another small tractor again, both for the wife to use, and for the tight little jobs that the bigger one can't get to). But, even with the CAB, I go into my woods quite often. You do have to be more cautious with the cab, and more deliberate because of the size ... But the cab also protects you from errant branches, hornets, etc. And if I break the glass, my $150 deductible buys a new one
Another option from LS (I bring them up because they're such a great value) would be a G3038h (same as New Holland WorkMaster 35). A slightly less optioned tractor but at 38 HP, the power is there. The loader is respectable, and you can probably get into one for around $16k. At that price, you can quickly learn if the size is too big or small.
Also, looks like Massey isn't too far from you (looks like 5 AGCO dealers within 60 miles). Check them out too. From MY personal experience, of the tractor brands that I've had direct experience with (Kioti, LS [and by proxy NH & Case], Massey, Kubota)... MF has been the best. That's my experience anyhow, YMMV .
I've seen the 1734e HST with loader advertised for around $23k. The 1739e (39 HP) would probably be around $25k...
...
Not trying to talk you into any particular tractor, just giving you shopping options to consider.