I've used a VC-1800 for over 5 years. Works perfectly fine. The only thing I don't care for is how easily it can bow if you lean on it (don't do this). It cuts accurate and I prefer the "segmented cutting" to a cutter just reading all the registration marks and cutting the entire piece at once.
Otherwise, I like the Summa series cutters for their small registration marks and accuracy as well. No segmented cutting though. Graphtec were good back in the day but unlike these two, they have their problems. I still use my FC7000 MKII at home. I just cut slow and nothing more than 10 feet in length.