Bikes rock. I am a fan of Specialized, Trek, Garry Fischer, Giant, Cannondale, and Ghost bikes.
You need to determine the style of bike your aiming for Road, Mountain, Racing, or BMX. Wouldn't recommend BMX as a choice in your line up.
I prefer hybrids, like mountain-road bikes or racing bikes. Regular mountain bikes, though durable, tend to be a slower less control bikes.
I prefer shifters with the clickers, the grip shifters.dont tend to last as long.
I would suggest, if you are buying a bike, goodwills, thrift shops, garage sales, offer up, or craigslist. Getting an older high end bike (90s) is far better then buying a newer low end. I got a 90s Specialized Hard Rock in mint condition for under $25 at the Federal Way goodwill.
Make sure you buy a bike pump and verse yourself in the art of flat tires, patching tubes, and adjusting breaks.
Vasoline is your bikes best friend. Lube that baby up, weekly. Stay away from WD 40, itll fuck your shit up.
Bike U locks are a must. Dont go cheap. And bike trailers and rear racks are also a strong suggested items.
Dont ever let anyone ride your bike. It never pans out good.
Hit me up with questions. Cheers...
Dont mix and mat