Reply to Newbie debating S2 Purchase - Please Advise!

Hey everyone,

I am a longtime pianist who is taking on DJing. I have a good friend who is a long-time, well respected DJ. He has offered me his old gear ... a VCI-100SE (Arcade Modded, with DeckSaver) and Audio4 DJ sound card for $300. Until this offer, I was nearly set on purchasing the Kontrol S2 from DJTT (today it is on sale for $425).

I have always been told, as a musician, to "buy your last one first." I am just trying to gather some opinions on which route I should go. I am price-conscious and would like to save as much money as possible, but do not want to buy something only to outgrow it and have to purchase something new.

Hope to hear from all of you soon! Thanks for your help.