I really hate singles, every time I do them I have ENORMOUS fluctuations in weights(could nail 5 singles one week, and 2 weeks later get 0/5 and fail with a 2.5 lb increment), I just never feel I "own" the new weight even if I PR 5 singles if that makes any sense to you.
To my honest opinion and feeling how my body reacts, I feel that I am very good at increasing the total work on VD and not the intensity, i'd prefer doing 6 sets of 5 at 340 for exapmle, and not do 4 sets at 365.
I've been doing 360 for a month now due to this fact(the ID kept going up so...), my initial instinct said I should add a 5th set again and maybe lower the weight a bit.