which board to buy- please help

Hi all,

I am considering buying a DSP board to get some hands-on experience in working on DSP. I have theoretical knowledge of DSP but zero practical experience. I will be doing some projects on DSP in say 3-4 months time. So i need to be prepared for that. (i have no idea what project i'll put in) I need some help regarding which one to buy. I am not having a concrete idea about what application i intend to do. Just have a feel that i may work on speech codecs. Cost is one of my major factors. So i investigated some boards which cost less that $200.

The boards that i have considered so far are

1. TMS320C50 board which is available for as low as 0 (planning to use trial version of codeComposer)
2. TMS320C31 board which is a floating point DSP for almost the same cost.
3. Freescale (motorola ) boards for about 0 with codeWarrior software IDE.
4. ADSP 2181 for about 0.

Please clarify some points-

1)I heard that it is always better to go for TI floating point processors are more companies are using it...Is it true? 2)I was adviced against going for motorola processors as my experience may not be useful if i work on TI processors in the future? 3)Also please advice me on whether should i stretch my financial constraints a bit more and consider buying a latest DSP processor, say TMS320C6xx series? 4) Or is it okay if i just have experience in "some" processor.. i can adapt to any processor later. ( of course how fast i can adapt is relative and varies from person to person, but generally speaking what is the opinion?)

Finally if u know some vendor who ships DSP boards, please let me know. thanx in advance.