Well, you've clearly never used an SSD. Like I said, after the basics are taken care of, the storage subsystem clearly becomes the single biggest bottleneck. SSDs are orders of magnitude faster where it matters; anyone who uses an SSD understands this, anyone who doesn't will think mechanical drives are still faster (they're not).
I have 2 RAID 0 arrays with fast mechanical drives that give me 300 - 350MB/s sequential read/write performance and while they are on par or better in that regard to my SSD, they pale in comparison in the categories that actually matter and are noticeable.
Yeah, and like I said or meant to say, the difference is in how much you spend. If you want to believe that the 2x-3x amount of cash you spent on your SSD's are worth it, go ahead. I'm sitting here with four 10k RPM drives in RAID 0 that is ridiculously fast that I got for less than the price of a single SSD that had any storage space worth buying. But I made the mistake I try to avoid, and that was argue with someone who has there system specs in their signature.
The only bad part of my way is that HDD's cost a forutune now due to some flooding in Thailand. Whatever you choose to go with, don't do it until prices drop back down to normal. That would be around 40$ for a 1 TB mechanical drive, and around 800$ for a 1 TB SSD.