Hey guys I've read through the noob stickies and I've been reading up as best I can recently. To put it simply, I'm new to cycling but I am a fairly fit guy who has always had an interest in getting started. I really feel single speed is where I want to start and where I'll likely stay. Maybe I'll work into Fixed Gear once I feel confident riding Single Speed. I live in Ohio, in an area with some "hills" if you want to call them that.. Mostly just winding, country, roads and some killer bike paths so I won't be doing any serious climbing. I'm taking the plunge though, and hope that I'll find joy in this sport and fitness. So here it goes:

Not asking for fit but here is what I'm working with. I'm about 5'11 and 225 pounds. So I'm on the large end of the spectrum for cyclists. I lift weights and do cardio 5-6 times a week so I have an athletic frame, very wide shoulders. My real question is more on the side of frames or complete bikes I should be looking at. I'm looking to spend around $500-600 (not opposed to spending less). From my reading here, I have already eliminated several brands that I've been looking at, simply from a quality standpoint (ie. PureFix, Unknown, 17teeth, Crew, the citygrounds phantom brands). I've been looking around at some complete bikes and these are what I've come up with.

Kilo TT (of course)
Leader 721 (on sale on citygrounds right now, $500 for complete bike)
Aventon Mataro
Fyxation Eastside or Possibly the Pixel (These guys seemed legit?)
Specialized Langster (if I can find it slightly cheaper than the average $650-750 price tag)
State Bicycle Core Model or Contender (I know there are mixed reviews on State)
Jamis Beatnik or Sputnik


I'm looking for something I can ride on the road or paved bike trails. I doubt I'll be going off road much. I won't be doing sidewalks or city riding (I live in a very rural area). Something comfortable for 20 or possibly 30 miles.

I know "track" bikes ride a bit harder on road surfaces and being that I'm heavier I'd guess it would only exaggerate the harshness.. So I'm at my own wits end here trying to figure out the frame material (aluminum might be too stiff with my weight?) and geometry.. But being heavy I probably want the lightest I can get?

I'm heading down to Columbus this weekend (3 hours away) and while I'm there I may stop in at a Bike Shop to get my fit sorted out and maybe get my hands on some bikes in person. There aren't many (if any) bike shops near me that can offer what I'm looking for.

Sorry for being long winded, but am I looking the right direction? Any of those bikes stand out above the others?