As I need to redo the p-trap system under my kitchen sink and I am all but an expert in plumbing matters, I would like to understand which one of the two alternative solutions shown below is the preferred one.
Solution 1 is proposed in this YouTube video and shown in the first picture.
Past the initial slip joints that connect to the tailpieces of the dual sink, only ABS pipes and ABS fittings cemented together are used, resulting in a fixed, highly leakage-resistant assembly.
Solution 2 is proposed in this other YouTube video and shown in the second picture.
Despite the plumber in the video keeps very confusingly calling it an ABS p-trap, this system has no ABS in it but it is fully made of polypropylene (PP) parts assembled together by slip joints.
This is my non-expert assessment of pros and cons of the two solutions.
Solution 1 has two advantages: a lower probability of leakage thanks to the cemented joints and a lower probability of blockage due to the larger inner diameter of the 1.5" ABS pipes compared to that of the 1.5" PP tubular.
Solution 2 has two advantages as well: an easier installation thanks to the larger number of degrees of freedom and a much easier maintenance, with many options to take it apart without damaging it.
On the other hand, maintenance of solution 1 is not that painful as it can be taken apart without damage as well, albeit less conveniently, by unscrewing the two slip joints up at the tailpieces and the nut at the tail end of the p-trap. In the worst case, if needed, just one cut at the pipe before the p-trap allows disassembling and the use of a slip joint or a shielded coupling when putting it back together makes it more maintenance friendly. However that nut at the end of the p-trap that makes solution 1 easier to maintain makes it also more prone to leakage as that screwed joint is always under water by design.
At the end, is it basically a wash and just matter of personal preference or is there a cogent reason that makes one solution definitely the superior choice?