So I'm in quite a similar boat as the OP but with a slightly greater price range. I had originally bought a thermaltake core 9 thinking I was going to use M.2s and SSDs and would never need more than the 3x5.25 bays(it does have another 4x3.5 but they are TERRIBLE). I'm now wanting to use a SAS RAID array instead and finding myself extremely short on bays(but VERY long on empty space...)
I really like the horizontal configuration of the motherboard and all the fan/water block mount points, but that's about it. Because the internal 3.5 bays are so awful I ended up bolting an old drive cage to hold a few drives. It works in a pinch but I hate it.
To further complicate my search, my motherboard is an Asus Z10pe-D16-WS and quite enormous. Its not easy to find a tower it'll fit in that ALSO has a nice selection of 5.25 bays.
I really like the horizontal configuration of the motherboard and all the fan/water block mount points, but that's about it. Because the internal 3.5 bays are so awful I ended up bolting an old drive cage to hold a few drives. It works in a pinch but I hate it.
To further complicate my search, my motherboard is an Asus Z10pe-D16-WS and quite enormous. Its not easy to find a tower it'll fit in that ALSO has a nice selection of 5.25 bays.