Great machine. If you have no plans to do colour, get the Multigrade module version. Easier to use and exposures shorter. Even so, it's not that bright and I find I am using the f2.8 lens wide open most of the time to avoid tediously long exposures; which is OK, it's that good a lens. Getting another enlarger with an Ilford MG 500 head has opened my eyes to how bright enlarger illumination can be; but the heat is such that double glass carriers are necessary. The standard carrier for the V35 has upper anti-Newton glass, none below.
As for the Auto-focus, it is so good I only check it every couple of years. With the must-have Leitz 40mm Focomat lens, the grain is needle sharp with lens wide open throughout the range. It will do 16 x 12 but won't quite go up to 20 x 16, so for that you either need another enlarger, or turn the head round, hand focus and project on the floor, not very practical if your enlarger is on a bench backed up against a wall, as the baseboard needs clamping to the bench.
Richard