All my DSSTs have been internet based. I love it. The time limit is never a problem for me...I have never even come close to taking up two full hours. And I love getting my score back right away. When I had to wait for my score on the English Comp CLEP I just about went NUTS. 
Plus, I like the "review" feature at the end of the test. I don't know how it works on the paper-based tests, but the DSSTs are like the CLEPs in that there is a "summary review" page that shows you all the questions and which ones you've marked and want to go back to. To me that is easier than the flip-flip-flipping that I assume you do on a paper-based test and also ensures you don't miss anything.
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DONE! History degree from TESC!
CLEPS:
College Math-69, Sociology-70, Humanities-72, Am. Lit-61, English Lit-69, S. Sciences & History-65, Eng. Comp/w essay-75, Microec.-64, Macroec.-73, Western Civ. I-71, Western Civ. II-71, American Gov't-71, US History I-75, US History II-65, A&I Lit-77, Prin. of Mgmt-76, Prin. of Mktng-76. Biology-69
DSST's:
Civil War & Reconst.-70, Modern Middle East-63, World Religions-76, Tech. Writing-67, Prin. of Supervision-67, HR Mgmt-69, Rise & Fall USSR-64, Vietnam War-60, Ethics-69. Intro to Bus-67, Org. Behavior-69, W. Europe-60
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