Re:
I use Gixen a fair bit if buying on Ebay, works well for me, set your max bid and forget about it until you get the "You won!" or "you didn't win..." emails.
I see what you mean about entering a Max bid on eBay, but with the sniper it keeps your max bid hidden until the final few seconds of the auction, I think this can help keep the price lower sometimes in the lead up to the auction end.