Well I have some ideas for you... So your site is all about web development right? Try WebDevLabdotcom it stands for Web development laboratory. like that.. I hope you like it. I dont know if the domain is still available just go ahead and check it.
It is great that you can start web development business. If you are looking for good domain name for your web site than i want to say that you have to use web host company. It is provide many of good domain name according to your business. I also want to suggest to use godaddy web host that provide you good domain name.
I would suggest the domain name DEVELOPMENZTECH.COM for your Development site.It may suitable for your website.You can register the Domain name at Tucktail.com and get many free services like hosting ,personalized email,Domain name locking etc.
If you really need a domain name then i can help you that is you can visit ineedname .com and here you can ask the availability of domain name through Gtalk and it is completely free of cost. Instant you can know the answer.