For that type of distance, escpecially as a daily commuter, get something comfortable and easy to ride. One trip on an uncomfy bike isn’t a big deal, but when you start doing it everyday, it builds up. Also, since you are pretty much highway, weight is a nice thing. Since lane splitting doesn’t sound like an issue for you, I would look for stability over nibleness.
I would recommend a tourer or sport tourer, but you are more into the sleeker bikes. There are a lot of good nekkid bikes out there for a good price, like V-stars and the endless line of Honda Shadows. I would definitely recommend you look into bags and maybe even a trunk for fairly cheap, as well as a windshield, so I’d hit up Ebay and look at what is out there, and what kind of look you can get when they are dressed up a bit. 75 miles is a lot of opportunity for road grime, bugs and other stuff to collect on you. Personally, I don’t like showing up to work looking like I’ve been camping for three days. And if your weather is anything like mine, where heavy storms and/or a 30 degree temperature drop can happen in just a couple hours, it is nice to be able to have a shield/fairing as well as a place to always have some rain gear, extra sweatshirt or jacket liner, water bottles, emergency tire repair stuff, extra helmet in case I come across somebody who needs a lift, etc, not to mention that you can still stop by the store on the way home when you suddenly remember that you really need to pick up a few things.
We have a lot of riders at my work, but only three of us actually ride everyday, rain or shine. I’m on a Honda PC800 and one of the other guys is on a BMW K1200LT and the other rides a BMW R1100LT, Drakar, Aprilia Falco, or one of two other of his BMWs, depending which one has the most gas each morning. Nice bikes they got but WAY out of my price range. The stripped Harleys, Shadows, Magnas, Vulcans, and Viragos only ride on sunny Fridays. I can talk forever about how much I love my PC800, but I won’t here. If you can find one, you can pick one up for about 5K, give or take. It was designed for one reason only. Commuting. They designed it well. My daily wear jacket is waterproof, and since I haven’t sprung for armor pants yet, when it rains all I do is slip on my waterproof pants (available at any local Kmart in the fishing section) and I’m set. I keep an extra pair of socks and shoes in the trunk just in case the rain ever soaks my feet too much.
A fairing or windshield might not look cool, but I don’t see any Harley’s on the road when it’s raining. Bags and a trunk may not look cool, but neither does a guy on a crotchrocket or nice cruiser wearing a backpack. Comfort and convenience will serve you well, with the benefit of not missing your car too much, which will make you enjoy your bike more. I’m not sure how big you are, but make sure you give them a good feel. At the shop the other day, while drooling heavily over a Triumph Trophy 900, I saw a fully loaded Venture (I don’t know the year offhand, but it was a newer one) and that was the BIGGEST freaking bike in every dimension I ever saw. The seat was at my belt line. But a used cruiser in the 750 to 1100 range, should serve you very well as long as it is comfortable. Hit up Ebay to get a good idea of what type of bikes are out there and a ballpark price for what you are looking for. I like cruisers a lot, but I got spoiled by a sport tourer. I love the Honda VTX, and want one bad, but I have recently deemed it as impractical for me. That was a sad deeming.
And yes, I haven’t kept tabs other than rough figures, but I have saved quite a bit of cash going back to a bike, at least until it snows. I’ve doubled my gas mileage, went to near nothing for maintenance (two tires when I bought it, brake pads (since I was already there) and battery cuz it died = less than $300). My monthly full coverage insurance is roughly 25% of my car’s, which by the way, is worth less than the bike… still pondering that one. All the women on the freeway want me (I know it is not true, but it’s my fantasy and I’ll lie to myself if I want to). And it is the only bit of adrenaline rush I get anymore now that I’m in the most boring job in the world. I dread winter now, because I hate my car.
By the way, extra points for not wanting a Harley!!! Smart man:)