i also think leatherique is the best product,and it smells fine to me.the process is a little lengthy,but it does a wonderful job of softening leather.i only do the two-step process in the summer when i can let the car sit in the heat for a day after putting the rejuvinator on. the rest of the year i just use the cleaner a few times for maintenance.i also think,but am not positive,that the prestine clean has some uv protection.
concerning the seals,i use the shin etsu on them. one still had a small crack in it,and i used some rtv to prevent it from getting any bigger.i thik 303 is a good idea,too,for the uv protection.