Moto18

Newbie here so please be patient hahaha At a crossroads now as to which bike im gonna go with. I've whittled it down to two. YZ125 or YZ250F (New most likely and leaning towards the 250F) Skill level.. Noob. I've heard the "buy cheap and work your way up" many times. So please leave that bit out of any posts pleasee ? Whats the best "servicing" process do you guys and gals go through after every ride or so too? i do understand the level of up-keep on these competition bikes is extensive but im really looking for the absolute best process and best products to use. Dont worry about budget products. I'm really looking for the perfect process and who better to ask than all you petrolheads! ? Also, quick vote! which bike would you go for? The 125 or the 250F? 2-stroke vs. 4-stroke?