Interesting to see where this Sucuri goes as an alternative. I tried my Shaped Pixels site and got an E, lol. I won't worry too much about that because the grade seems to fluctuate a lot in a matter of minutes with sites I've entered in and then once again minutes later. I put in one where it got an A, then about 8 minutes after, it got a D. I just turned on my host account's Cloudfare (free through Media Temple) to see what grade I get with that. With Webpagetest, I got all "A"s except first time byte at 1.197s which gave me an F, lol. An F at just under 2 sec.