What materials they use is the first thing to look for. If you want good plastic signs then you can avoid looking at all the metal sign places or all the lighted sign places. Then ask to see examples of their work.
Some companies that have good installers are places like seattle cabinet pro's... well I live in the seattle area but online find some places that have people that specialize in that.
I found cityflux.com very useful. http://www.cityflux.com I like how you can find seattle events on a map.
You can find a list of good hotels in the seattle are from expedia.com. It rates the hotels based off of peoples reviews from staying there and provides a descripition of each hotel.
Try Prestige Tree Services. You can check their services at their site.
There are a several really good websites for information on elementary schools in Seattle and the surrounding areas. I would recommend http://www.seattleschools.org/
One of the best places to find energy consultants in Seattle is on the website Angie's List, an online review website that offers several energy consultants in the area.
A good place to find used mini cars in Seattle would be at the Mini Cooper dealership in Seattle. Another place would be at other used car dealership in the area, as there may have been trade ins of Mini Coopers done recently.
Shop around for reputable dealerships in your area.
A good place to look for a cheap Alfa Romeo in Seattle is on Autotrader and some local Seattle trading places like Stuf4Sale. On autotrader the user is given several search options to find the right car, including search area.
You can find this out by asking people that use that provider in that specific area. This is a great way to find out if you are going to be happy with that particular company or not.
The best place to find this data for your area is speedtest.net. Run a speed test, then you'll be able to find the top providers in your area.
A good place to start your search would be at Furniture Factory Direct. They are located in Tukwila, WA, just a few short miles from the Seattle-Tacoma International Airport.