For cheap quality decks get the KAM DDX 3000 from DJ superstore I bought a package with everything for GBP 350 (ish)
I brought my first SL1200's in 1991 I up graded to black 1210's in 1993 and sold them 1999.
A year after I sold my 1210's I really regreted it but could never justify spending GBP1,500 on a new set up so I went without untill 2004. In 2004 I finally had enough did loads of research and decided to buy a pair of KAM DDX3000's.
I have to say the DDX3000 are great, I can do everything I could do on my 1210's and even have +10 -10 to play with, and a reverse button. I came into some cash last year and thought about getting another pair of 1210's but in the end blew the lot on tunes. 1210's are sexy and yes they are the most robust and best looking decks but they are not the be all and end all.
The only thing I would say is if you buy a package like the one I did it is worth up-grading the mixer and carts. Having said that I brought a new mixer and fancy carts but decided to go with what came with the package for the first 6 months and had no problems.
Mixing records is all about time and patients not having the best equipment.
Having been in the mix for 17 years I can honestly say it is only in the last year I have got to the stage where I can pick out any two random records from my collection and beat mix them perfectly every time. And the reason is it is the first time I have had a dedicated music room at home where I can just go and practise every night. I practise every day for at least half an hour. And behold at last I can mix Gypsy Wowan with Octave one !
You can also scratch and do spin backs on the DDX3000. I am still to shy to scratch live, but one day.
Only down side to DDX3000's I got booked to play at one of my brothers parties last month .As it was my first ever gig in Auckland I spent two weeks getting together a killer set from Disco to hip hop to detroit techno. Had everything planned to perfection. Got to the venue and it suddenly dawned on me they were using 1210's +8 and -8 only. I had worked my whole set out at home based around having +10 and -10. I was able to change a few things around so all was good, but there you go even the old 1210's have some draw backs.