https://www.toolboxbuzz.com/head-to-head/best-cordless-oscillating-multi-tool-head-to-head
I went for a Milwaukee m12as it is good and more compact than the 18v tool. It has been great. I’m mostly have Makita m18 but don’t like their multi tool.
Does not look 2 years old to me. Get the water pressure tested and I'd change this valve to a new one.
If you have a fill loop pressure gauge you should be able to get an idea from that but keep the valve to the heating closed
I have the battery version that came with 1/4 and a 8mm ring. Mostly use 1/4 bit as I have them and have a few 8mm when larger shank is useful eg bigger cutter or spiral cutters
Another vote for Bora Centipede 4x2, and MFT top. Easy to store and easy to setup. I have a benchdog hinge and square but for me I think parallel guides would have been more useful than the hinge. I 3printed the bits for parallel guides based on steel runners and they are good enough.
I looked at the upgrade offer £20 and then looked at my square and considered upgrading. I think the clasp will be better but decided the cams are okay for me. May be a bit slower
I bought a new one off ebay, setup a search and a new one popped up fairly quickly after the bearings in my old one needed replacing. Replacing the bearings is on my list of things to do.
I have a dewalt 625,a trend 1/2 , corded bosch 1/4 and the makita battery trim router. The trim router gets the most use easier to track mount and do a quick job. I leave the 1/2" for bigger jobs or woodrat
I built a MFT slab using the Bora legs - I find it great fairly light and easy to setup. Pretty similar to this but I bought a benchdog Rail hinge and fence.
Ground does need to be roughtly flat though
I use mostly benchdog uk , but have had some from aliexpress all very good and tight.
Recently I have started 3d printing some - they are also fine 20mm (20.0mm) Bench Dog Set with Levers, Cams, Stops, etc by CabbitCastle