Mammothman,
First, welcome back to the hobby. You don't need a high end detector to have fun and make a lot of good finds. Some amazing finds have been made with very inexpensive detectors. The key is just swinging your coil over the right spot! And don;t get too hung up on detector depth. 90% of all your finds will be 6" or less no matter what machine you are using.
To start, I would stick with companies that are well established and have a good reputation for quality and customer service. In my opinion, the companies that top this list are:
Garrett
White's
Tesoro
Now I'll be honest with you, and again this is just my opinion here, White's doesn't make the best inexpensive detectors out there. Their mid and high end detectors, however, are probably among the best in the world.
This leaves, for me, Garrett and Tesoro.
If you want a detector with a display screen, the Ace 250 or 350 would be the ones to get. Check out the features and decide which is right for you. Try and get the sniper coil in addition to the stock coil as they work a lot better in trashy areas like parks.
If you are good with a tone machine, Tesoro is probably best as they are very lightweight and are backed by a lifetime warranty. The Compadre and the Silver uMax are the best starter machines in this line. And some never feel the need to move up. Investigate the differences to both so you can make the best decision.
These detectors ought to leave you with some money left over, so I would look into getting a digger (a simple screwdriver will do nicely with some practice), a pouch for your finds, and if you have the cash, a pinpointer will be an excellent addition. For me, the Garrett Propointer is the best one out there and it is a must-have. It makes retrieval of targets a lot easier!
You'll get a lot of opinions here, so wade through them all. Whichever one you pick, I hope you have a lot of fun in this amazing hobby.
Good luck to you!