I have the Maxi 1 and at the time of purchase some years ago it was a good lathe for the money.
It still is, however times move on and other makes and models come onto the market.
The reason I purchases the maxi was that the Jet was not swivel head, it slides, which meant for my personal situation with workshop space meant that I would need another 4-5 feet at the end if I wanted to hollow form turn for any length of time, leaning over a bed is never a good idea if you want to prevent back problems so my preference is a swivel head.
I have recently returned from away demonstrating on the Killinger lathe which is designed and made in 'Germany' not in Asia as with the others. I was so impressed with the power, fine engineering and accuracy (which lets face it the Germans excel at), and power that I am thinking of changing to their 1450 model in the near future.
Using the Killinger was like driving a high powered Mercedes, solid beauty in motion. The other benefit that I liked is that not only does the head swivel but it also slides along the bed, I would seriously consider looking at the Killinger's with Phil Irons being the contact for these in the UK.
The weight of the lathe is a big consideration but the be all and end all, it is how it is engineered so to send the forces down into the floor again the Killinger leg/stand system has this covered, it is a 3 phase 2 HP motor that works off of a standard 13amp single Phase domestic supply.
So when the Maxi 1 was available for £1600 all in it was a good lathe for the money, it is like everything getting a bit pricey for what it is. I am very happy with mine, but am changing if I can. Have a look at the Killinger before you decide, you will really notice the quality of German engineering over both the Jet and Record.
http://www.killinger.de/en/shpSR.php?A=575&p1=255&p2=1307http://www.philironswoodturning.co.uk/I appreciate you asked about the Record and Jet, but I think you may be interested in looking at others.
One thing that niggles the hell out of me with the jet is that the controls are set in the head. When you are turning a large form you don't want to keep walking up to the head end to turn the lathe on, this for me is such a basic piece of design that is wrong, you want a control that you can move for on off and reverse, I soon got peed off using the jet for this reason.
But out of the Jet 3520 and Maxi 1 I would go for the Jet, but after trying the Killinger I would not go for either now for my money.
Problem is, ask 10 turners a question !!!