I'm designing a new toolhead for my heavily modified Ender 5. At the moment it uses a MicroSwiss all metal hotend with dual blower fans, a tiny 404010 fan on the heatbreak (barely enough) and on top of it an Orbiter 1.5 extruder.

It has been working quite well but I want to get something with higher flow capabilities to push print speeds.
Perhaps even dual Orbiter extruders and two hotends.

After I'm done modifying the Ender5 it will have a 314x314 bed which should allow for dual hotends without losing too much space.

Ideally I end up with a new toolhead so that the old one may be kept as backup.

I have been eyeing the Orbiter V2 with the Phaetus Rapido UHF but I'm open to suggestions. What have you been using and do you have any advice? There are a ton of options.

I tried a Volcano, and because of the long melt zone, I wasn't able to completely tune out the oozing/stringing (on my Bowden at least). I dunno if the newer high flow hotends still have this problem or not (or if they're fine on direct drive); something to consider.

I actually have a Orbiter 2, and think I'm going to try the Volcano again. I still need to print a new toolhead for it.

I have a Dragon SF on my Voron which seems to work well (in a Stealthburner/Clockwork 2). I like that I don't need to use 2 wrenches to change nozzles (unlike a V6) and that it securely attaches to the toolhead with screws (in the Stealthburner).

Im running orbiter 2.5 with a phaetus dragon HF and cht nozzle, very very happy with this Combo.

I put an E3D Toolchanger that I got for cheap from Aliexpress on mine, with 2x E3D v6 and Trianglelab TBG-Litle direct drive extruders. The TBG-Lite is amazing. It's got so much grip on the filament, that I didn't even end up setting up a TPU profile at all, I just used a PLA profile for it.

I ended up switching over to a Snapmaker U1 earlier this year, and the only thing I miss are these TBG-Lites.

I haven't tried it yet but I ordered a couple of tz v6 v3 for my dual extruder build that has been pending electronics for ages. If they perform well I might get more and put a tool changer on my main printer.