Errikos - Again, sorry for the delay. Was out of town.
About plugins between DP and Logic. As of Logic 9 vs DP 6 or 7, Logic has had way many more plugins which helped it's popularity (MOTU has a way of being late with these things). And Logic's plugins are exceptional. Apple continues to add nice pop music plugins (like the drummer feature, and the amp sims). There are some handy plugins unique to Logic that DP does not have (Test Oscillator, Exciter, Grooveshifter, Sub Bass, Pitch Shifter - as a plugin , but DP has it like melodyne, built into the waveform. I think Logic X has this now?), BPM Counter - as a plugin, and some of the Dist, Delay, Filter and Modulation plugins. DP does have different takes of some of these.
On the other hand, DP 7 and 8 added some nice plugins itself. (check out this web page http://www.motu.com/products/software/dp/plug-ins.html).
Some of the highlights are speaker cabinet rooms for guitar and bass (fairly unique - almost MIR like), a very nice dynamic EQ, a wonderful phase correction plugin (I use it all the time), a 5-band MS dynamic EQ, a de-esser that's a one band dynamic EQ, a sub-kick bass drum enhancer, a deep ensemble chorus, the Masterworks series Comp, Limiter, EQ (very nice) and a LA-2A clone leveler.
Some of DP's unique plugins are Pattern Gate, POLAR (a RAM based loop recorder - great for vocal re-takes), an MS decoder, a Moog style multi mode filter, and the assortment of Delay, Dist, Modulation, Filter and Reverb types.
It's fairly even now, but with Logic having a few more plugins, both having high end plugins, but DP having a small handful of killer plugins that Logic doesn't have, and visa versa. Logic's Space Designer is roughly equal to DP's utilitarian ProVerb. Both are great, but neither is AltiVerb.
Also, DP has had MIDI plugins and Spectral Effects for 20 years, (can edit pitch, time and formant, like flex time but without the ability to automate speed and pitch together - for the tape machine stop effect for example).
DP has part of VocAlign built in.
DP does not have Apple Loops (but can use them, nor does it have the new drummer feature). DP does not have a decent sampler nor many VIs (this is where Logic KILLS DP). One has to buy DP's VIs separately (a stupid move IMO)
Overall, except for VIs, they just about even each other out. I'd give Logic the edge but with DP having a few killer must haves.
I know I'm leaving something out but that's a pretty decent breakdown I think. Go to that link above and you'll see for yourself.
If there is one DAW that comes with enough VIs and plugins to do a pro production out of the box, it's Logic. Cubase has it's good plugins (Halion, Padshop and many many others), DP does have MachFive which is great, but is not included with DP (MOTU hear's from me often about this), but regardless which DAW one chooses in our business we all need Kontakt pretty much anyway.
Logic is a great DAW. Overall DP does certain things better, IMO. There are a lot of Cubase users here, but there are a lot of strengths to Cubase, Logic and DP (and Pro Tools too), and I like having three of them generally - DP, Logic and PT. Together they cover so much ground and I like switching to Logic for some things, and back to DP for others. No big deal to me.
I'd like note Expressions, but I can live without. I'm waiting to find out if VEPro and DP are having issues (mentioned in another thread), but I see no reason to leave DP for Cubase. I see no reason to leave Logic for anything. But I see very good reasons to learn a couple of contrasting DAWs. It doesn't take much time as there is a lot of cross over.
Hope that helps. I'll try to add a lot more detail to the DP vs Logic orchestral music comparison soon. DP wins, IMO, for a couple of very important reasons, but you have no reason to stop using Logic for orchestral music if you're getting the job done IMO. Logic's score editor is actually is better than DP (but I use Sibelius anyway).