All bikes are ok for normal people. Just buy what you are comfortable with.
5"10 +
100cc the bigger the better
honda is a better motorcross bike (250 and 450) and yamaha is a better trail bike
bike
A Trek Bike.
Saracen is a far better make Especially with their 2010 bike
I dunno, But i wish someone would invent you some better grammar.
Moves faster than normal.
A hyper is better
If you have a "normal" bike (whatever you mean by that), and want to do BMX style riding, then sure, get a BMX instead. But if you're not interested in tricks, stunts and jumps, then a "normal" bike will probable be more useful to you.
The Mach bike is better because it is faster than the other bike; but if you like messing around and doing tricks then the other one is better.
It is hard to determine which bike is better for the price, you must first decide what features of the bike are the most important to you. Then choose the bike that best fits your needs.