Best Classic speed patches?

[CRL]

Hi All-
I got my nearly stock ('040/50mhz,CDROM) A4000 running OK and added Fblit and oxyport patches to speed thing up.  Then I got to looking around in aminet and found many other speed patches (memory speedups, cpublit thingies, P2Cgraphic whizbangs, boot-fasters, etc.).  Sooo, do any of these work on an AmiDos 3.9 system?  3.9 was described (uncharitably?) as just incorperating patches that were out there, but I'm not sure which ones.  Or which ones fight eachother and end up slowing things down.  I'm guessing you-all have tried all possible combinations over the years and can suggest worthwhile improvements.  
Yours-
CRL

[CRL]

Hi Odin-
Yes.  I bought a Sonnet "quaddoubler", from a classic Mac supply company.  Comes with a big heatsink and fan.  Plug and play.  There is some discussion of these things in a hardware thread.

slvrdrgn- Thanks for the mathcode tip.  I assumed that amidos 3.9 had included this fix?  I don't recall a claim to that effect, so I must have assumed it.  They did say "many optimizations" or word like that.  I'll try the beta.  Is it reasonably safe?

Yours-
CRL

[CRL]

oops.. hit send twice somehow.
Sorry-
CRL

[CRL]

Thanks All-
I've downloaded all the suggested patches and will try them.  Question: doesn't 3.9 shift the ROM to RAM in order to patch stuff? And if so isn't it in RAM like blitzkick, providing all the inherent speedup? What am I missing here?

Also- there was a memory speed-up in aminet that made me wonder if it would work on a A4000. (According to ABIB my memory functions are the slowest part of the system.)

Your past advice got me to invest in turboprint, which did improve things nicely.  How much would I notice the difference a video card makes?  Screens pop up real lively as is, but I can't get video clips (the movie trailers on the 3.9 cd)to show smoothly. Is the slow part the decoding (CPU) or the screen painting?  How does one sort that out? some kind of benchmark program?  Just full of today.
Yours-
CRL