To resurrect an old thread, I finally purchased the Dianese Alien Perf Jacket (Black/Black) and Delta Perf Pants combo (from Revzilla) and wanted to share my experience.
I've never bought from Revzilla, but I was very impressed with their operation and service. Spend lots of time with them on the phone before purchasing and really appreciate the sales reps patience with me. Package arrived in two days. I'm right in between sizes, and the Pants were just too tight. The jacket I ordered (a 54) came on a 54 hanger and bar code tag, but was a 52 when I opened the jacket (stuff like this is expected when purchasing online). Revzilla let me use their 'discount bucks' against the purchase of the thorax and back protector so these basically were free. They emailed me a call tag; received it back in 2 days, and reshipped corrected sizes same day - a 4-day total turnaround for replacement - didn't cost me an additional penny. Great to talk with and I complimented them on both their business practices and competency. I wish our business ran as well as theirs appears to we could learn something from them. Very satisfied customer.
As for the gear is concerned: The Jacket is made of the softest (D-skin) leather that I have ever felt - in either riding gear or even just in regular leather clothing - smells wonderful. It fit like a glove from the first moment I slipped it on - zero break-in. I purchased a 54 so I would have room for the Wave back and Thorax protectors which both fit in pockets and is certainly comfortable armor. The perforation (you can see thru it when you hold it up to the light) allows for airflow in the heat, and has a non-removable "3D liner" that creates air separation between you and the actual jacket. I rode this jacket yesterday in 90-degree, high-humidity Tennesee heat. I am amazed at how well it dissipated the heat. While certainly toasty sitting still, when moving I was comfortable (it passes almost as much air as my full-mesh summer jacket with 3X the protection). Zips to the pants so these could be worn for trackdays.
I now totally understand the difference between the high-end and low-end gear. This stuff is heirloom quality.