Assuming you mean Hook2, not Hook, as Hook was not compatible with Tripleshot.
Hook2 is a very poor choice as it does not support raster, and the transducers sold with Hook2 (Bullet, Splitshot and Tripleshot) are probably among the worst transducers you can use due to a low quality 2D-element, extremly wide conenagle and low power. I would go as far as saying that is Hook2 is the only unit within your budget, you should wait and save up, or look at used units.
Hook Reveal with 50/200-HDI is a great budget-option. It lacks raster and sidescan, but the quality of the sonar and transducer is a lot better than Hook2. With Elite Ti2 beeing discontinued (replaced by Elite FS) there are very good deals to be found on that unit, pair it with Active Imaging 3 in 1 if you want SideScan.