I was checking out TechWest Hosting (techwesthosting.com). They look reliable and their reseller packages meet my criteria.
They mention on their website that they are in business since 2003 but their domain name was registered in august 2008.
However, I was unable to find any review of them. Does anyone have experience with them?

Techwest Hosting has been in business since 2003 operating under our parent company, TechWest Computer Solutions.
This is the information from their site. But you can ask them some pre-sales questions to get a clarification regarding this.

Good Evening,
Just for clarification - we've been around since 2003 as TechWest Computer Solutions and have operated TechWest Hosting since 2003 as well.
It appears that somewhere along the way, I dropped the ball and failed to update my registrar information (I accept full responsibility) and our domain got re-registered by a "traffic-jacker".
We were able to re-secure the domain back in August and hence why the registration date shows 2008.
I hope that clarifies things abit.
Thanks for considering us!
A Grateful Dad

Well have you searched reviews only on WHT or google around as well? Otherwise you might want to go with a hosting provider with a proven track record in WHT.