I disagree, and I ALWAYS snipe. When you snipe, you can't get caught up in anything, since you set your max days ahead and just go away. When you bid in real time at the end - that's when you can lose control.
With regular bidding, it is true that others can't see your maximum, but the ADDITIONAL advantage of sniping is that others can't see THAT YOU ARE BIDDING AT ALL! This can create a desirable complacency among your competitors, so they stop paying attention to the auction, until it is too late (for them).
Bidding early inevitably incites others to counter-bid. I have seen too many instances where people "creep up" on the high bidder, just to see what the current max is. This always results in a higher final price. In extreme cases, two individuals can get locked into a bidding war. They should have sniped.
There is nothing "unfair" about sniping. Everyone is allowed to take part in any auction at any time they like. So why not right at the end? Of course, there are people who get a kick out of bidding and counter-bidding on the internet, like in a live auction. These people need a life. They do everyone a disservice, except for the seller.
The bottom line is this: there is no conceivable advantage to the buyer of bidding until just before the end of an auction, and there are the potential disavantages of bidding early. If you are going to bid at the end, you might as well be safe and use a sniping tool.
P.S. I have used Auctionstealer for years. Works fine.
+1. Just set and forget. Figure out your maximum bid but hold it out until the last few seconds. No point in creating interest early is there