Having two real estate agents will give you more choice overall.
For example, I am looking for a house right now. I fell head over heels with a small 3 bedroom house, only to have it disappear 2 days later. Then it reappeared on my second agents website, and I learned that he had that house under contract.
Remember that you do not have to give both agents a commission. A lot of agents will happily show you houses and give advice for free, in the hopes that you will buy a house through them. Once you have settled on a house it is a matter of seeing who can get you a better deal.
Finally, this is kind of off- topic, but I would do some research into the real estate market near your area before you buy. The market is going down the tubes these days and you may regret buying a house ten years from now.
Of course, prices are the lowest they have been in decades, so it could also be the best investment you will ever make.
Good luck!