Overall I would vote for Hyster. My experience in the US would say parts are easier to get, parts are less expensive with proper maintaince they will last 10 to 12,000 operating hours.

Linde has a good reputation but equipment cost is high , new or used, service parts are much higher (even regular maintence items), do to the safistication of the unique design, trouble shooting can take for time (technicans need special equipment & training on Linde to be efficent. Of course. Hyster service training is also required but design is similar to other makes), parts at times can be hard to get. Linde units have a reputation for longer life than Hyster

My 2 cents worth.