New on this mpc thing

Hi all i am new to this forum and i have some questions that i couldn't find anywhere.
Im in the position of buying any mpc i want but i kind of ruled out the 60-3000(want them later on maby) the 500 and 1000.
If been making music for over 15 years now but always on daw's and want to switch to a more hardware feel of beatmaking.
Now my question is: is it posible afther i layed down the beat (sample with some melody) to ad my synth (yamaha motif and roland jv-10800) straight on the mpc while the beat is playing without the help of a daw?

question2: if wanted to buy an mpc earlier but ended up with a sp-606 (dont awsk why) dont like the thing but 1 thing i do like is you can edit ore cut out any recording you did even later on during the session, is this posible on a mpc?

And for both questions if so on witch mpc is this posible.

I kind of set my mind on a 4000 ore a 2000xl(mainly because i always wanted 1) but if this is not posible on 1 of them ill consider a 2500 ore 5000.

If someone could help me i if would appreciate it.....thx.

i will answer first main question first. The MPC is a sequencer, a MIDI sequencer. So you can record midi note information instead of 5 audio as stereo audio would be a big file. The MPC5000 has this ability to record audio tracks live into MPC. But why not just use midi and make synths play arrangement you played. see comparison thread. Learn what is a midi sequencer is and how it can help you make music. You could record all your performance played on the synths on to mpc tracks live with midi and then edit this and play again. then record into daw or MPC.

Thx for your help.

I did spend lots of time in that comparison section if been on this forum for weeks now only to just register.
I kind of know what i can do midi wise i just wonderd about this part since i kind of want to do production in 1 box outside a daw and only use the daw in the end mix part.
I kind of work like this dude but in a daw http://www.youtube.com/watch?v=reikD6hVorc
I just wondered if he was recording this on the mpc (not the midi, i know he is, but the sound) since that is what im after.

edit* ok just (finaly) found what i was looking for and its on the 2500.

DIRECT RECORDING...took me a couple of weeks to find it, but ok.