The Hara 2.1 is a excellent choice, however Hotbodies has a newer edition out (2.2). Great little speed for a great price. I have on in my sedan and the size, and punch in it is nothing like I felt before. (Here's my shameless plug) www.stormerhobbies.com
should carry these speedos. Another place for Ko Propo base speedos is in www.Speedtechrc.com
as well. Novak has the GTX which is another great speedo. Tekin has a new speedo in the works as well that looks to be space efficient and on the coolness scale as well. Then LRP should be releasing the Quantum 3 (anytime soon we hope? Keeps getting pushed back).
If your looking for non brushed speedos try, Novak, LRP and Tekin. These are well known companies that stand behind the products they put out. Best of all most of these companies have some sort of "tech" person on here that you can ask questions about. (Novak and tekin I know do)
I bet you if you use the "search" button in the upper right hand corner of this site, you can find some "dead" threads about speed controls and what everybody seems to run. Hope that helps-