As far as the "operation" of the machine goes, I cant comment.. BUT the thing I don't care for is> they have their own size, type & style of fittings on EVERYTHING.. You have English, Standard, Metric & now, JCB..
Most/ALOT of mechanics here in the States cant reach in their tool box & pull out a fitting to test fuel pressure or hydro pressure on a JCB.. Its a 1-2 HOUR ordeal.. to JUST find a fitting..
SO, that'll be something to consider when making your purchase.. ease of maintenance/trouble shooting..
Can you describe these new fittings? I worked for JCB for about 5-6 years and didn't come across any JCB specific fittings. Unless it's a recent thing (last 3 years). The telehandlers and backhoes ran BSP and some of the mini diggers used ORFS. The only weird fitting I came across was the JCB test fitting and they were normally just on a 1/4 BSPP thread or UNO, so easy to pull out and put a standard fitting on if you didn't have the right adaptor. The JCB genuine hoses were a bit funny in that they were fitted with an o-ring on the taper side of the fitting, they still seal without the o-ring though.