which orders are easier to fill?

Hello,
I just have a question about stop orders for brokers to fill.

1.one buy-stop order of 10 lots
2.two buy-stop orders of 5 lots each

They are set to be same hit price.

so which of them is easier/quicker for broker to fill when the price is hit?

Thank you,

at such low lot levels I think it doesn't matter at all. There won't be any noticeable difference.

Depends on how you define a 'lot'

which definitions are there? I thought one lot always reflects 100,000 $.

Most legitimate brokers will have no problem filling 10, 50 or even a 100 standard lots. Something most if not all here have nothing to worry about.

In the retail market I think the standard is 100k indeed. I heard some guys from Saxo Bank talking about 1000k lots though.

you'll get bad fills, depending on the time and S/R levels, after 4~6 mil order size...
they'll withdraw liquidity after your order hits them and consume best bid/ask if the market movement has a big bias in your direction ...

1 standard lot =$100,000, 1 lot eurusd's pip value=$10.
a guy from dukascopy told me the normal trading size of big guy is around 50 millions. that's 500 lots. 500lots eurusd's pip value =$5,000, 500lots are easy to get filled in normal markets.
If the big guy wanna trade 1000 lots, he normally put two 500lots orders.

and stop order is always easy to get filled, because, when the price hits the stop order's level, this order will become a market order. So, you can get filled all of the lots. (market order will get filled at current available price, no matter what the price is.)

the hard one is limit order. they may only get filled partly.