Jay is pretty spot-on, with machine lengths.
Axles are dependent on what you ultimately do put in it, the trailer EW, and whether or not you care about what weight classification your plate falls into. I don't know how the DOT is in NY, but, if you have to run a DOT number, cross scales, etc, you may want factor all that in. Generally, I wouldn't think you'd need more than 3500# axles. Those axles typically come with 15" wheels, so you want to make sure have good tires (most trailers are coming with Chinese garbage). I added Maxxis 10-ply 225/75 to my trailer, to get as much reliability as possible. For sure, go with torsion axles, as they ride really nice and minimize the beating your equipment and trailer will be subjected to.
A typical V-nose will gain you ~30" of extra floor length and a lot more additional storage than you might think. Hit my signature link for a look at what I can fit into mine.
As far as brands, that depends on your budget. You can buy stripped junk or spec a custom-build. I chose the latter, as I knew typical trailers in my length would never hold up.
1st Class Lawn Service
'13 Hustler X-ONE, 60", Kohler ECV749 EFI
'05 Hustler FasTrak, 42", Honda GXV530
'13 Toro Timemaster 30"
'02 Lawn Boy SilverPro 21"
Stihl BR600 blower
Stihl BG55 blower
Stihl KM55R trimmer
Stihl KM55R Kombi system
Stihl MS180C chain saw
Stihl HS45 hedge trimmer
Echo SRM225 trimmer
Echo GT-2000 trimmer
Gravely WB edger
'14 Ariens Compact 24" Sno-Thro
'08 Troy Bilt Squall 2100
'06 Chevrolet Silverado
'13 Bravo Star, 7'X12', V-nose
Last edited by ducnut; 01-21-2014 at 09:02 PM.