Felt also has some nice fixed gear / single speed offerings at fair prices: http://www.feltbicycles.com/USA/2011...ie-Series.aspx

It depends on what's important to you:
- Style
- Individuality
- Rarity
- Race pedigree
- Low maintenance
- Warranty
- Low Cost
- Weight
- Performance
- Etc...

If you buy a bike like a Felt or Specialized from a shop, if you have any issues just take it back and it may be covered under warranty. If you buy a-la-carte then you have to either fix it yourself or pay. If you buy from online like from Bikes Direct then you have to mail stuff back and forth and still install the parts yourself. Some are very comfortable doing all of that. Some are not.