DubConqueror: I find the Steam sale to be kind of mweh. I bought only one game, that I wishlisted, Vampire: The Masquerade - Bloodlines.
With all daily deals and flashes coming by, I already have the interesting ones (like Fallout: New Vegas) uninteresting (like the Call of Juarez games: looking at reviews and screenshots, the original and Bound in Blood - that I already own - are the only ones I like, Gunslinger is too cartoony/arcady and The Cartel gets bad reviews).
But mostly, I find them too expensive. My limit for rental, as you 'own' games on Steam only as long as Steam stays in existence, is €5,-.
I don't like to go any higher with DRM-ed games.
Got interested by Shadowrun + expansion, but they were just as expensive at GOG (11,83 when translated into euros) and I'd rather opt for no DRM than for the extra availability of mods in Steam workshop, so I bought them at GOG.
GOG Summer Sale - Steam Summer Sale: 10 - 1 in number of games bought (11-1 when counting the freebie Magrunner).
Bought plenty more GOG games myself . Steam = Too many lousy discounts, too many retreads (same games that usually get put up for daily deals), too many early access games being thrown onto daily deals. Notice the lack of good discounts or great deals on older games?.