Since Creedirect, my percentage of testers has increased considerably. For brands like Creed, which I like fairly well but never enough to pay even half the retail price, testers are the way to go.
But, aside from Creed, I think that 99% of the rest of my collection are in original packaging. For Creed, probably 90% are testers and the rest are decants.
In general, though, packaging doesn't bother me and if a tester is available and cheaper, I'd just rather get that. I'm interested in the juice, so having a top or a box really doesn't mean that much to me. Unfortunately, the vast majority of bottles I want don't have easily found testers, which is why most of mine are in the retail packaging (I mean, I'd much rather have a cheaper tester of a Lutens or many L'artisans, simply because I don't just LOVE them, but it's quite hard to find testers of them).
Some people are perfume purists, but really, unless it is just one of my personal favorites, I can live without the glitzy packaging. Sometimes, the glitzy packaging is downright annoying (Bond bottles are beautiful to look at but impossible to use for travel and always fall over on my shelf with the slightest movement; likewise the MPG bottles and especially caps like to fall apart. Personally, I'd rather just have a plain bottle and be done with it; that's one thing I like about Malle or Helmut Lang... the packaging is so simple and easy to handle.)