Need help with bookshelf speaker choices. . .


Looking for suggestions on a good (economical) set of bookshelf speakers to use with a Dared VP-16 integrated tube amp (10-12WPC) that I just picked up. I KNOW the Dared products are not considered the "best", but this is my first foray into tubes. My biggest concerns are 1) best overall sound for dollar (<$500/pr) and 2) are the suggested speakers efficient enough for the power I have. Some speakers that may be under consideration are the Paradigm Studio 20's or 40's, Klipsch, etc. Also, how about the Tube Audio Design (TAD) 803's? Can I get away without a sub with any of the above or other suggestions? Thanks in advance for your opinion(s).
kketron
Are you using these in a bookshelf or on stands? If they are on a shelf or stuffed in somewhere, you can't have a rear port. A front port may have issues with near walls or objects but will be better. If you intend to use a sub, no port is best in my opinion.
My money is on the Usher S-520 monitor. They play very big for a small speaker and sound very good doing it. Hard to beat for the $$.

Oz
Thanks to all for the responses to date. Does anyone have any opinion on the TAD 803's? Kketron
My opinion is that if you buy the TAD 803, you will likely enjoy them...and you will be shopping for something better within the year.