Read the tutorials in my sig. There is no single "best" gps on the market. There are families of GPS chips and any manufacturer who uses a chip in the various family will have the same performance as everyone else using that family of chips.
Well, I guess what I'm looking for is a GPS device where I can choose which roads to take to get to a destination. Does it work like mapquest where it plots the course for you?
I just bought a Holux GR-271 compact flash gps and don't have any complaints as of yet. I like it because you don't have wires ran all over or in the case of BT, another component you have to keep track of. As for nav software, I have no real opinion, some have features others do not so you really need to determine what you will use it for most, compare the features of each and choose. I would recommend you do some research on the software you choose before buying; it may not be what you want/need.
I just bought a Globalsat BT-359. Works fine. My colleage has a different model (noname, cost around $75) that also works fine, but the BT-359 picks up a signal in the office and his doesn't, so I guess, it may be worth the mony if you expect to be in difficult reception areas.
Well, I guess what I'm looking for is a GPS device where I can choose which roads to take to get to a destination. Does it work like mapquest where it plots the course for you?
Definition: GPS Device is the receiver. What you are describing is the mapping/routing software that is usually separate from the receiver itself. Garmin and Magellan make all-in-one units that combine the software and hardware in one device, but they are very expensive single use devices.