They are definitely nice to have, but the reason I don't normally suggest them is because that $50 can go to more RAM, a better video card or better processor. Plus, with getting a plain 7200 rpm drive, you can upgrade to a full SSD later. They are certainly better, but at the moment not the most efficient use of your money. With your budget and needs, however, it does seem to be a good choice. You don't need it to be very fast for gaming, but you want it to be quick with fast load times, but you don't have the budget for an SSD. So, good choice. It's a great build.
In the future, a much easier option than linking each individual part is pcpartpicker.com. It shows you prices from different vendors, lets you set custom prices, and allows you to pick specific vendors. It also allows you to link something like this:
[PCPartPicker part list](http://pcpartpicker.com/p/3Is8y) / [Price breakdown by merchant](http://pcpartpicker.com/p/3Is8y/by_merchant/) / [Benchmarks](http://pcpartpicker.com/p/3Is8y/benchmarks/)
Type|Item|Price
:----|:----|:----
**CPU** | [Intel Core i3-4330 3.5GHz Dual-Core Processor](http://pcpartpicker.com/part/intel-cpu-bx80646i34330) | $134.97 @ OutletPC
**Motherboard** | [EVGA Z87 Stinger Mini ITX LGA1150 Motherboard](http://pcpartpicker.com/part/evga-motherboard-111hwe872kr) | $163.39 @ OutletPC
**Memory** | [G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866 Memory](http://pcpartpicker.com/part/gskill-memory-f31866c9d8gab) | $71.10 @ Newegg
**Storage** | [Seagate 1TB 3.5" 7200RPM Hybrid Internal Hard Drive](http://pcpartpicker.com/part/seagate-internal-hard-drive-st1000dx001) | $79.99 @ Newegg
**Case** | [BitFenix Prodigy M Arctic White MicroATX Mini Tower Case](http://pcpartpicker.com/part/bitfenix-case-bfcprm300wwxkwrp) | $99.99 @ Newegg
**Power Supply** | [EVGA 500W 80+ Bronze Certified ATX Power Supply](http://pcpartpicker.com/part/evga-power-supply-100b10500kr) | $34.99 @ Micro Center
| | **Total**
| Prices include shipping, taxes, and discounts when available. | $584.43
| Generated by PCPartPicker 2014-05-12 05:12 EDT-0400 |