The timing issue is user based. The biggest factor here is not knowing how to control the quantization. It's considerably more flexible than the MPC more simplified swing. Once you know your way around it it's pretty simple.
The MPC more simplified swing? Please clarify. The MPCs swing is not any more simplified than the MV..it just simply works. It has a huge advantage in this area. The best thing Roland can do is to copy this feature exactly how it is implemented in the 5K. If it doesn't, the MV will always be lacking in this area.
The 5K's Timing Correct parameters:
1. Timing correct: 1/4, 1/4 triplets, 1/8, 1/8 triplets, 1/16, 1/16 triplets, 1/32, 1/32 triplets, 1/64, 1/64 triplets. Turning this off gives you 960 ppqn!
2. Swing field: Provides the classic MPC swing based on % from 50-75
3. Shift timing: can shift notes backwards or forwards
4. Strenght: Determines how rigidly the track will be quantized. First MPC with this function.
5. Window: Lets you set the width of the area for each timing point. First MPC with this function
6. Note repeat: Will following TC settings. You can latch this function so that it stays on.
If you want stability, the MV has been upgraded and supported very well by Roland. The MV 8800 is simply an 8000 with one OS update, a color screen, lead free solder, and new paint. If you look at it for what it is (an MV 8000 SE) it has been supported far better than any other product of its kind with the exception of JJ OS for the 1000 and 2500. By support I mean upgrades and bug fixes which is what really counts. When it was first released it really sucked bad.
The MV did "suk bad" when it was released. Visit the MV Forums and read the older threads. I have verified that they are still there. Roland took their sweet ol time to fix the OS. It wasn't until OS 3.0 that MV users could rejoice (years after the initial release?). You state that it has had better support than any other product of it's kind? The MPC is the only other product on the market that is similar. So would you say that the MV has had better support than the MPC 2000/2000XL, and 3000..the most popular pad-based workstations ever? Or even the 4000? The MPC 5000 has just been released 5 months ago and is on OS 1.02. Upgrades and bug fixes will obviously come.
Chopping. Producers have been chopping samples for decades. They done this blindly on older MPCs and other samplers. The MPC 5000s chopping is good. It is so easy to chop the sample into 2-64 equal parts or chopped automatically based upon the peaks in volume. The 5K then creates a program with these chops. In this aspect, it is equal to or better than anything on the market. However, when it comes to manual chopping and non-destructive chopping, it can be improved. Both the MV and MPC 1000/2500 have better chopping in this area.
Real time timestretch w/ BPM sync. This is a highly regarded function in these forums. Roland has added this in pretty much all of their products. I have this in my Fantom G. This is not available in an "official" Akai OS. JJ OS has this function without BPM sync but it is not fully implemented. Along with the VGA monitor support, these are the main selling points of the MV (my opinion). I would love to see this added to the MPC 5000. While this is in my Top 10 list of feature requests, it is not in my Top 10 list of functions that I use everyday. Chopping samples is the best way to go. Besides, all the latest MPCs have offline time stretching that you can set the BPM. In addition to that, in studio use...every major DAW has this function in real-time. So to wrap this up, real time timestretch w/ BPM sync is something live performers will get the most use of.
The 5000 is in a buggy state and will be supported by Numark so just don't expect a stable OS to ever happen or many new features. History could change but that remains to be seen.
I am willing to share music created using the MPC 5000. It doesn't limit me at all. It does have some bugs indentified here in the forums from actual users. But overall, we love this machine. Akai/Numark just released an OS update for every MPC they currently sell. How's that for support? I have confidence that OS updates/improvements are coming. See what I wrote above about earlier OS of similar products.
Still it has some really good features and sounds a little better than the cheesy sounding 100 and 2500 series. You may not notice a difference or care but I did not like the sound from those units.
Your opinon is respected, however....there is a thread on this subject that compares the sound of the MPC 3000 and 2500. Almost everyone choose the MPC 2500 in a blind test

That is all I will say on the topic of sound.