If you're a person who follows technology news then you likely know the state of hard drive pricing right now. As a result of the terrible flooding in Thailand last year a couple major hard drive manufacturing plants in the area were left underwater. This has unfortunately driven the prices of hard drives through the roof. I bought a couple 1TB drives in early 2011 and they are now selling for two-thirds more then when I originally purchased them. One storage market not impacted by this disaster is the solid state storage market. Although solid state drives can't be purchased in the same large capacities of hard drives, at least not without breaking the bank, they are a high speed, low heat and low power alternative.
I am up to four SSD's in regular operation now - three in my desktop system and one runs my home server OS. I've come up with all sorts of creative ways to mount the drives in my mATX case while keeping them out of sight for a clean looking interior. Currently I have two drives sitting between the top of my case and the top 5.25" bay device and another one tucked behind the motherboard tray. It's not that I can't mount them elsewhere, like in the actual drive bays, but it's a much cleaner look with them hidden away and it also allows for less interrupted airflow in my cooling setup.
Silverstone has released a fair number of products over the last year aimed at the SSD market - many of which are two-in-one bay components which hold one or more SSD's in addition to their primary function. Recently putting another one of these accessories on the market, Silverstone has released the FP58. The FP58 will hold one slot-loading slim optical drive and four SSD's in a single 5.25" drive bay. An accessory like this makes it easy to expand on the number of SSD's (or 2.5" drives) in your system without needing to find creative places to put them all (most new cases still only have one or two SSD mounts).