I have a Liquivision X1 and have previously dove a predator and was also Beta test diver for the Liquivision Xen and now beta test diving the Galileo with Trimix software.. I'll probably also beta test dive the Liqivision Xeo shortly..
Here are my comments:
Galileo SOL: Its "Open Circuit" Only and has beta trimix software and its using ZHL16 with gradient factors (they call them Micro Bubble levels).. The software is about 2-3 months out in my opinion, but when released it will be a solid Trimix computer with upgradable firmware.. the logging software is pretty awesome and you have a very very strong company behind them. the computer is LCD (grey with back light) and has a user replacable battery that lasts for at least 2 years.. It also has Integrated Air for up to 10 tanks!! almost all dive stores carry these and service is exceptional! These computers are expensive though.. expect to pay $1600+
Uemis SDA: I've dove them before and these are GREAT color OLED screen dive computers with a built in solar panel for charging the battery.. (no user replacable battery).. they currently dont have Trimix, but from my understanding its very close.. The CTO for Uemis was the guy that originaly wrote the Uwatec (Galileo) software for scubapro back when dive computers became popular.. the dive logging software is mostly online based and pretty neat.. It also has Integrated air like the galileo.. no idea on actual algorithm since its not out yet.. These guys are based in Sweden with some local stores now carrying/servicing them locally in USA..
Liquivision X1: This is an all Aluminum design, full 10 gas trimix Open Circuit or fully Closed Circuit Rebreather technical dive computer that has BOTH the VPM-B and ZHL16 algorithms available in the same software package.. I run Multi-deco and can switch between either algorithms with a single "tap".. Its a pretty small and completely potted device so it cant flood at all and has 2 depth sensors for redundancy and doesnt have any buttons.. i really like that with thick dry gloves. Its rechargeable so no batteries required and when traveling you never have to worry about "running out".. its nice and small and doesnt take a lot of real-estate..The screen is very bright and very readable! the company that manufactures them is in BC Canada and their customer service is absolutely phenomenal!! it does not have air integration and is a dedicated "tec" diving computer. You cant go wrong with this computer.. reliability with its current version 5 of the hardware is bar-none! They cost around $1,395 for the computer with PC cables and an additional $150-190 for the full CCR trimix multiple deco algorithm firmware.. (CCR PO2 controller is available as an option)
Shearwater Predator: This is a full color OLED 10 gas CCR and/or OC dive computer milled from solid block of Aluminum. The unit itself is fairly large and heavy (bigger than a galileo even) but sports a truly great color display. The current software is a ZHL16 with gradient factors, but will soon have a VPM-B option (at an additional charge), it has buttons to access the very easy to navigate menu system. the software is extremely easy to use and makes good use of colors to indicate status (like red = bad). it has a user replaceable battery. This is a solid solid dive computer thats also made in Canada with great customer support. it does not have air integration, but does have bluetooth for uploading/downloading.. this is a GREAT computer and you cant go wrong here either.. the cost for the Trimix CCR/OC computer with ZHL16 is $1,345 (plus whatever additional charge there will be for VPM-B) and the PO2 controller CCR unit is $1,895
Liquivision Xen: This is a color OLED bottom timer only.. it has the same "tap" interface and is also potted, but it has a user replacable battery.. only difference is, that you cant flood the computer because its potted.. Also, you dont REALLY need a dive computer to dive trimix dives.. I dive mostly on a bottom timer only.. if you have a V-Planner/Deco Planner dive all mapped out and written down its very easy to use.. and if the dive goes pear-shaped you have ratio-deco to back you up.. its simple, easy and everyone follows the exact same time schedule. (I have a review written up on the Xen on "The Deco Stop"). the cost of this unit is $499
Liquivision Xeo: exactly the same body/hardware as the Xen, except that this pretty color OLED machine now sports a full 10 gas trimix dive computer firmware on it! this device is imminent for release and I'll get my beta test unit soon.. (i'll post a review when i get it) cost will be $1199 for full trimix OC/CCR
I hope this helped somewhat and did add to your confusion