I had a WarpEngine, and I can vouch for its peppiness. I only sold it because I purchased a CyberStorm MKIII.
Make sure, though, that you use the software utilities which you can download. Get the latest 68040.library, and use the util (I forget its name) which maps Kickstart to RAM, as it doesn't do it automagically. If SoftHut doesn't have the disk (I'm sure they do,) let me know as I have a DMS of it.
It also has a neat start-up chime.
