I've carried and shot Sigs for years off and on since 1990. They are a wonderful piece of machinery and engineering. They are also a little heavy and have a higher bore axis, than say a Glock, so you may feel recoil lightly more.
IMHO I'd start with an old school P228 or P225 (P6). Get one in good shape, keep it in good shape and you can mostly likely get your $ back out of it if you decide to sell.
My refurbed P228, ignore white grease on the rails.
P225 from late 80s:
P220 from 1992:
P226 reburbed I carried a while also:
