recomendation on oscilloscope?

[AlvaroHN]

I am going to buy an oscilloscope, and I need advice.

I have US$ 160 to spend on the oscilloscope.

what you recomend? a PC based oscilloscope?

or a DSO NANO scope?

or something else?

here are some links of possible candidates

http://www.ebay.com/itm/2CH-20Mhz-Ba...item46114c218b

http://www.ebay.com/itm/Portable-Min...item338baf9d90

http://www.ebay.com/itm/New-Nano-ARM...item3f310e63b2 (200 khz!!! only??)

http://www.ebay.com/itm/20M-MDSO-USB...item1c3aaad14f

best

Alvaro