The V205-t only has one knob on the control panel, the DC only models have several though. Very simple to set up the commonly adjusted parameters as you have on button to select parameters and the knob to adjust 'em.
It's no longer a cutting edge machine (mine is over 9 old now, been dropped a few times and still going strong. Little difference to the current version AFAIK) but still has more bells and whistles than most will ever need- 3 AC waveforms for example, triangular wave is supposed to be an advantage for thin aluminium but as squarewave works so well on everything...
Downsides... the extra 20A that many of the others offer is well worth it, some of the less often adjusted parameters (like preflow time) are accessed through a 'hidden menu' which requires that the machine is turned off which is a bit silly. It's limited to 85Hz AC frequency above 170A but this may have changed now
You mentioned keeping your existing torch as one of the reasons for staying with Lincoln. Bear in mind that AC is MUCH harder on the torch- without a watercooler you'll need a wp-26 style torch for high amp AC work, if your current torch is a wp-9 it'll only be rated for around 100A AC (and get uncomfortably hot too)
Also saw, max freq 150 on the Lincoln instead of 200 (if you ever use it) and 2 year warranty as opposed to the 3 offered by Lorch.
The kemppi rig over at rapidwelding also looks yummy
Doesn't store jobs/settings. Obviously job memory saves a bit of time but you need to keep a notebook of what each 'job' is anyway so not a massive advantage unless you've a photographic memory? Takes seconds to scroll through start, slope, pulse, post flow settings adjusting 'em. Personally outside of production work i'd consider job memories a gimmick (albeit a handy one) but then my world is mainly 'one offs'
Only had one problem since i bought it and that was when (at a year so old) i dropped it getting it out of the car- cracked one of the water cooler mounting lugs and was a nervous wreck until i fired it up and found it still worked perfectly. It's not had the hardest of lives (compared with the way a lot of site kit is treated) but it's been used daily for most of it's life
List prices have never meant much with this sort thing but then the v205t is a fair bit behind a lot of the competition in the technology department. The machine was recently 'facelifted' so i doubt an all new one is just around the corner. Whatever you end up with remember that you can't use amps you don't have. If i were looking for a (single phase, portable) replacement the the 220A machines would be at the top of the list