I have a Samsung Galaxy Proclaim right here, through Net10 (Straight Talk's sister company -- both are companies owned by prepaid giant Tracfone). The only difference is Straight Talk is primarily-marketed through Walmart stores.
Here's the straight scoop on mine -- my phone costs me only $45 a month (it's normally $50 a month, but if you do auto-pay with a credit/debit card, Net10 will give you a $5 discount). That's in comparison to others I know paying (at least) $100 a month for a smartphone, while being handcuffed to a 2-year contract.
Both the ST and Net10 versions of the Samsung Galaxy Proclaim phone are fully-featured smartphones with everything you could possibly want in an Android.
Best of all, this particular model runs on the Verizon Wireless national network, so if you have VZW towers in your area, you're good to go.
And right now over at HSN, you can get the Net10 version of this phone
plus one month's free airtime (and a few accessories)
for only $179.95.
It should be noted that the map differences between Straight Talk phones goes something like this -- most of ST's non-smartphones utilize both the AT&T and T-Mobile networks, which enables a huge nationwide footprint that's hard to beat. All Android model numbers ending with the letter "S" are provisioned on Sprint's national network, which doesn't cover nearly as much territory as AT&T and T-Mobile combined (Sprint is typcially works best in large cities and along the interstate highways), while the Proclaim is exclusively using Verizon's national network.
Take it from someone who owns and uses one of these phones, every day -- it's most definitely the "real deal"!