Dog Grooming Shaver

What are the best quality of dog clippers/shavers for my dog?

I have a black lab mix and she has really long hair. She has bad allergies and does so much better when she goes to the groomers and gets shaved. With the $ I spend at the groomers I would be saving $ in the long run if I just groom her myself. I have experience grooming so that wont be the problem. I would like to know if there are good grooming sets at either Petsmart or Petco or if I need to get them somewhere else or even human grooming sets. Please let me know. Thanks.
Just to inform all of you, my dog gets allergy shots once a week and also is on a prescription allergy medication along with Clariton everyday.
Where can I buy Oster A-5, a Wahl KM-2, or an Andis Pro?

Oster or Andes are the only ones that would be worth investing it. But the blade will still be expensive.
You should be dealing with a cure for the allergies instead of shaving a breed like a lab. I have never heard of shaving as a cure for allergies since the hair itself would not be the problem.

Dremel 761-03 Cordless Pet Nail Grooming Rotary Tool $33.40 Make grooming your pet’s nails a safe, fast, and calming experience with the Dremel 761-03 Cordless Pet Nail Grooming kit. Because it grinds nails rather than cutting them, this handy tool helps prevent bleeding nail beds, cracked nails, or nicks. At the same time, the 761-03 is quiet enough that its noise soothes rather than startles a nervous pup..caption {font-family: Verdana, Helvetica neue, A…

New Andis Clipper Ultraedge 5/8 Ht Blade – Item 64930 Chrome Coated Leaves Hair 5/8 Inch 16mm $41.99 Chrome finish resists rust and keeps blades at optium performance. Size 5/8 HT leaves hair: 5/8 16mm….

New Andis Clipper Blade 15 Full Cut – Item 64072 Leaves Hair 3/64 Inch 1.2 Mm Chrome Finish …

Oster Professional 10 Universal Comb Set Specially Designed to Fit Oster Clippers $12.99 Oster Universal Clipper Comb Attachments fits most clippers….

Wahl 79524-1001 Deluxe Chrome Pro with Multi-Cut Clipper & Trimmer, 27 Pieces $34.99 The Wahl Deluxe Chrome Pro 27-Piece Complete Haircut Kit has all the tools you need to make haircutting at home easier than ever. Perfect for total body grooming, this haircut kit is used by a wide variety of people for their haircutting needs, including professional cyclists, swimmers, and other athletes to trim body hair. .caption { font-family: Verdana, Helvetica neue, Arial, serif; font-size…

Wahl Professional 8685 Peanut Classic Clipper/trimmer $25.95 The Forfex Professional Corded Hair Clipper is one of the most powerful clippers on the market….

Oster Animal Trimmer Blade, Shaving T-Style for Finisher Trimmer Model 59 $13.95 76913-006 – SHAVING T-BLADE – Accessory blade for Finisher Trimmer 59 (078759-100-000). Cuts 1/125″ – 0.2mm….