Potty Training

Ok so I think Sapphire is ready to start potty training. She tells us when she needs a diaper change and tells us she has to pee but when we take her in the bathroom you can tell she just peed before she told us because her diaper is warm but we still put her on the toilet she wipes then flushesthe toilet. We're gonna buy her some pullups (she has potty training underwear but those aren't working out to well.) Do you think it'll be easier to potty train with the one in the first picture (that's what she has) or the one in the second picture? We got her the one in the first picture because we thought it'd be easier. But now I'm thinking maybe if she had a potty to just go sit on when she has to go maybe that'd be easier for her.