I've taken several Cisco and EMC exams at this site. I've never had a problem getting in, although…read moreonce I changed my plans because the proctor let me know they were crowded with people taking a government test of some kind. (Thanks for the heads' up!)
They are great at same day scheduling, something few others do. They have at least two rooms of test stations, with cardboard dividers between the screens. The screens are nice and large, too. It's too bad that the testing software can't adapt to the larger screen, so the text is yuuuuuge, and you have to learn to manage the windows - but that's a software issue, not Tactix's.
My test didn't require them, but they have comfortable headphones, and they provide both covers for them, as well as foam earplugs, and a decent amount of scratch paper.
If you're needing to spread out, or your exam requires a number of materials (books) to be open, or you *really* have to be in your own space, you might want to check another testing center. I've never taken an exam like that, so I honestly don't know. But if you need to take a test without scheduling it days in advance, and need a proctor that will work with you to get it done (i.e. when Prometric or Pearson's website won't let you schedule a same-day test). I'm the kinda test taker that closes his book, runs through one last run through the practice test, *then* schedules the exam when I can squeeze it in around my work and family demands. Like, um, *right NOW!*.
It's in an older office building, and the building isn't in the best shape. But, it has gotten much better over the last 4 years, and Tactix's area has always been clean. Getting into the testing center from 183 is easy. (Getting out and back on to 183, on the other hand...)
I think if you realize that the testing center's portion of your exam fee is fixed, and with Tactix, you're trading some fluff and getting flexibility, availability and capacity. I've taken a few exams that are in nicer office buildings. They're not around anymore, and they were difficult to schedule a convenient time with, didn't have saturday hours, and had 6 or 8 seats.
I will be back again, hopefully in a few months when I'm ready for my next certification test.