Bought an S1 last year in preference to Powercaddy (p/c) Freeway although the Powercaddy Classic was a very close contender.
The S1 seemed much stronger due to the large section oval tubing as against the p/c round section particularly in the "yoke" area. Other benefits include most, if not all, parts user changeable and cheaper. e.g. when the clutch fails on one or both p/c wheels (as they will) I believe that replacements can only be obtained through p/c authorised dealers who will probably insist on fitting them as it is not a straightforward operation. Could be anywhere between £30 - 45 per clutch. Motocaddy - on to the interweave web thingy, order a new wheel which includes the clutch - about £20 + p&p. 30 sec job to replace.
To be absolutely honest I have had 2 problems. The first was that after a couple of months the battery started to run out of ooomph after about 16 holes. One phone call and a new battery arrived within a couple of days. The other was when a fitting broke due to unusual circumstances (the best guess could take the prize of the month ). The trolley was returnd via the retailer, the problem sorted and trolly returned. Motocaddy acknowledged that other users had identified this weak fitting and it was subsequently re-designed.
It would have been better to have not had these problems - judging by others I know with the same trolley I was unlucky, but the way in which Motocaddy dealt with them was spot on. imo a company should be judged on their response to a problem, not the problem itself
Usual disclaimers apply but if Motocaddy read this, an upgrade to S3 wouldn't go amiss.......