I just recently purchased my first non-sony ereader, the Kobo Glo HD after nearly a decade of owning Sony ereader devices. I have always had a sony ereader in its various iterations since 2007, the PRS-505, PRS-650, PRS-300, PRS-T1, and so on. The PRS-T1 was the most unimpressive of the lot, as it seemed like Sony gave up by the time the PRS-T1 rolled around. The T2 and T3 I didn't bother getting, as I knew I would be getting a Kobo or a Kindle as my next one. I have fond memories of the PRS-505, which had the best build quality of the bunch. The Nook Glowlight Plus reminds me a bit of the PRS-505 in that regard. I had the cover light for the PRS-505 too-- something that won't be at all neccessary for my new Glo HD!
I almost went for the Voyage, but the $200 price tag was a bit much, and the closed ecosystem is a turn off. Besides, I've been using Calibre since the 0.6x days. I sideload all of my books as well. The Kobo felt like the natural fit for me.
I'll be getting the OMOTON case for it.
http://www.amazon.com/dp/B00XVSOUNQ/?tag=mr060-20
Honestly, I cannot wait. This is my first ereader in more than 3 years, and will be the first with a frontlight. The 166 dpi of the PRS-T1 is very noticable- I cannot wait to see how the 300 dpi screen looks on the Glo HD in addition to the font selection on the Glo HD. I had my own fonts sideloaded on the PRS-T1, but it was a pain to get working initally.