Bass is such an interesting instrument, even in simple musical styles such as blues and country. Technically it is easier to learn than the guitar - one finger, boom-boom. But to play it well, or simply right, requires an understanding of where the music is going.
I also like Illsley's style. He's not technically advanced, but he plays the right notes and he is solid. Glen is a bit hit and miss for me. On some things he's just excellent, so versatile, but on other things, he's to busy. That chordal progression he does on Sultans, for instance. Sounds just wrong to my ears.